| 1/24/2006 |
New Publication
M. Zhao, T. Hanamura, H. Qiu, K. Nagai and K. Yang, "Grain growth and Hall-Petch relaion in dual-sized ferrite/cementite stel with nano-sized cementite particles in a heterogeneous and dense distribution, 54, 6 (2006) pp1193-1197
M. Zhao, T. Hanamura, H. Qiu, K. Nagai and K. Yang, "Dependence of strength-elongation balance on the volumen fraction of cementite particles in ultrafine grained ferrite/cementite steels, 54, 7 (2006) pp1385-1389
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| 1/13/2006 |
E-mail News for January was added.
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| 1/5/2006 |
New Publication
S. Torizuka, A. Ohmori, S.V.S. Narayana Murty and K. Nagai, ”
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| 12/27/2005 |
E-mail News for December was added.
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| 11/30/2005 |
New Publication
T. Inoue, F. Yin, Y. Kimura and K. Nagai, Distributions of Strain, Microstructure and Hardness in a Bar Steel with Ultafine-Grained Structure through Groove Rolling, J. Japan Inst. Metals, 69, 11(2005) pp943-952*Japanese
T. Inoue, S. Torizuka and K. Nagai, Novel Rod Rolling Process for Designing Efficiently Ultrafine-Grained Steel Bars Based on Numerical Analysis, J. Japan Inst. Metals, 69, 11(2005) pp934-942
*Japanese
T. Inoue and K. Nagai, Numerical Analysis Strain Distribution in Rolled Plates Introduced by Cross Roll Rolling -Study on Creation of Shape and Properties for Shear-Added Rolling Plates II-, JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY, 46, 538(2005) pp.1076(50)-1080(54) *Japanese
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| 11/29/2005 |
E-mail News for November was added.
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| 11/21/2005 |
New Publication
S.V.S. Narayana Murty, S. Torizuka and K. Nagai, Microstructural evolution during simple, heavy warm compression of a low carbon steel: Development of a processing map, Materials Science and Engineering A, 410-411 (2005) pp319-323
S.V.S. Narayana Murty, S. Torizuka and K. Nagai, Ferrite Grain Size Formed by Large Strain-High Z Deformation in a 0.15C Steel, Materials Transactions, 46, 11 (2005) pp2454-2460
S. V. S. Narayana Murty, S. Torizuka and K. Nagai, "Microstructural and micro-textural evolution during single pass high Z-large strain deformation of a 0.15C steel ", ISIJ Int'l, 45 (2005) 11, pp1651-1657
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| 10/31/2005 |
New Publication
M. Zhao,K. Yang, Effects of Nano-sized Microalloyed Carbonitrides and High-density Pinned Dislocations on Sulfide Stress Cracking Resistance of Pipeline Steels, JOURNAL OF MATERIALS RESEARCH, 20, 9 (2005) pp2248-2251
F. Yin, T. Sakaguchi, Q. Tian, A. Sakurai and K. Nagai, The Twinning Microstructure and Damping Behavior in Mn-30Cu (at%) Alloy, MATERIALS TRANSACTIONS, 46, 10 (2005) pp2164-2168
K. Enami, K. Nagai, S. Torizuka and T. Inoue, The neck growth model in a smooth round tension and a circumferentially notched tension, TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 91, 10 (2005) pp769-776
T. Inoue, S. Iwasaki and K. Nagai, Deformation Property of Cross Rolled Plates Based on Numerical and Experimental Analyses -Study on Creation of Shape and Properties for Shear-Added Rolling Plates I-, JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY, 46, 537 (2005) pp67-71
E-mail News for October was added.
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| 10/11/2005 |
Award
Shiro TORIZUKA, TX Technology Showcase Tsukuba in Akiba2005 Best Presentaion (2005. 9.22)
SVSN Murty, Excellent Poster Award, NanoSPD3 (The 3rd International Conference on Severe Plastic Deformation) (2005.9.25)
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| 9/30/2005 |
E-mail News for September was added.
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| 9/9/2005 |
Article appeared in Nikkei BP homepage (Japanese) http://nikkeibp.jp/wcs/leaf/CID/onair/jp/sangaku/396695
New Publication
H. Kim, Y. Kobayashi, S. Tsukamoto and K. Nagai, "Effect of cooling rate on microstructure evolution of rapidly cooled high-impurity steels", Materials Science and Engineering A, 403, 1-2 (2005) pp311-317
K. Enami and K. Nagai, "Evolution of true stress-true strain relationship after local necking by stepwise tensile test, Tetsu-to-Hagane, 91, 9, pp712-718
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| 8/30/2005 |
E-mail News for August was added.
NewPublications (now printing)
SVSN Murty, S. Torizuka, K. Nagai, Kitai and Y. Kogo, "Dynamic recrystallization of ferrite during warm deformation of ultrafine grained ultra-low carbon steel, Scripta Materialia, 53, 6 (2005) pp763-768
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| 7/28/2005 |
E-mail News (English) for July added.
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| 6/25/2005 |
E-mail News (only Japaneses) for June added.
K.Enami and K.Nagai, The evaluation of plastic deformation limit by circumferentially notched tention test, ISIJ Int'l, 45, 6 (2005) pp930-936
M.-C. Zhao and K. Yang, Strengthening and Improvement of Sulfide Stress Cracking Resistance in Acicular Ferrite Pipeline Steels by Nano-sized Carbonitrides, Scripta Materialia, 52, 9 (2005) 881-886
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| 6/6/2005 |
Award
Keitaro Enami
Prof. Inui's Award of The Society of Naval Architects of Japan
"Assessment method of ductile and brittle fracture initiation in high strength steels",JOURNAL OF THE SOCIETY OF NAVAL ARCHITECTS OF JAPAN, 195 (2004) pp263-270
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| 5/28/2005 |
E-mail News (MPG News from Tsukuba) for May was added. (Sorry, it's only in Japanese)
New Publications
T. Inoue, J. Cho, F. Yin and K. Nagai, Effect of Shear Deformation on Microstructural Evolution of Ni-30Fe Alloy during Hot Deformation, J. Japan Inst. Metals, 69, 4 (2005) pp341-347
M.-C. Zhao, T. Hanamura, Q. Hai and K. Yang, Precipitation of Carbonitrides and Their Strengthening upon Non-quench Aging for Micro-alloyed Acicular Ferrite Pipeline Steels, Materials Transactions, 46, 4 (2005) pp784-789
K. Nagai, Ultrafine-grained steels: Basic researches and attempts for application, Canadian Metallurgical Quarterly, 44, 2 (2005) pp187-194
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| 3/29/2005 |
Award
Kotobu NAGAI, Mishima Award of ISIJ in fy2005
Shiro TORIZUKA, NISHIYAMA Memorial Award of ISIJ in fy2005
New Publications
S.Torizuka,Creation of Ultrafine-grained Steel by High Z - Large Strain Deformation, Journal of the Japan Welding Society, Vol.74, No.2 (2005) pp13-17
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| 3/15/2005 |
New Publications
S.Torizuka
Production of Ultrafine-grained Steel Bar and Plate by High Z-large Strain Deformation in Ferrite Region, Ferrum, Vol. 3 (2005) No.10, pp188-195
S.V.S. Narayana Murty, S.Torizuka, K.Nagai, N.Koseki and Y.Kogo
Classification of microstructural evolution during large strain high Z deformation of a 0.15 carbon steel
Scripta Materialia, 52 (2005) pp713-718
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| 1/15/2005 |
New Publications
N.Tsuchida, E.Baba, K.Nagai, Y.Tomota
Effects of interstitial solute atoms on the very low strain-rate deformations for an IF steel and an ultra-low carbon steel
Acta Materialia, 53 (2005) pp265-270
Z.Liu, Y.Kobayashi and K.Nagai
Effect of Phosphorus on Sulfide Precipitation n Strip Casting Low Carbon Steel
Materials Transactions, 46,1 (2005) pp26-30
M.-C. Zhao, T. Hanamura, H. Qiu, K. Nagai, Y.-Y. Shan and K. Yang
Difference in the role of non-quench aging on mechanical properties between acicular ferrite and ferrite-pearlite pipeline steels, ISIJ Int'l, 45, 1 (2005) pp116-120
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| Dec.5 |
New Publications
N.Tsuchida, Y. Tomota and K. Nagai,
Tensile Deformation Behavior at High Strain Rate for Ultrafine-grained Ferrite-cementite Steels, Tetsu-to-Hagane, 90 ,12 (2004) pp1043-1049
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| Oct. 15 |
New Publications
J. Cho, T. Inoue and K. Nagai,
Effect of Shear Deformation on Microstructural Evolution of Ni-30Fe Alloy during Hot Deformaiton Materials Transactions 45 10 2960 2965
J. Cho, T. Inoue, F. Yin and K. Nagai,
Effect of Initial Grain Orientation on Evolution of Deformed Microstructure in Hot Compressed Ni-30Fe Alloy Materials Transactions, 45, 10 (2004) pp2966-2973
H. Qiu, Y. Kawaguchi, C. Shiga, M. Enoki and T. Kishi, A high-strength and low-yield-ratio carbon steel bar processed by thermo-mechanical rolling, Materials Science and Technology, 20, 9 (2004) pp1158-1160
M. Zhao, Y. Shan, K. Yang, Effect of Aging Treatment on Mechanical Property and H2S Resistant Behavior of AcicularFerrite Pipeline Steels, Acta Metallurgica Sinica, 40, 9 (2004) pp948-954
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Sept. 20
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New Publications
Y. Kobayashi and K. Nagai, Impurities in Steel and Microstructure of Rapid Solidification Structure, Materia Japan, 43, 9 (2004) pp730-736
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Sept. 15
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New Publications
Z. Liu, Y. Kobayashi and K. Nagai, Crystallography and precipitation kinetics of copper sulfide in strip casting low carbon steel, ISIJ International, 44, 9 (2004) pp1560-1567
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July 28
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New Publications
K. Nagai, "Future Material- Research on Ultra-Steel" , Plant Engineer, 36, 8 (2004) pp13-17
A. Ohmori, S. Torizuka, K. Nagai, N. Koseki and Y. Kogo, "Effect of Deformation Temperature and Strain Rate on Evolution of Ultrafine-Grained Structure through Single-Pass Large-Strain Warm Deformation in a Low Carbon Steel", Materials Transactins, 45, 7 (2004) pp2224-2231
P. Xu, F. Yin and K. Nagai, "The Thickness Gradient of Microstructure and Mechanical Property in an As-cast Thin Steel Slab", Materials Transactions, 45, 7 (2004) pp2456- 2462
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| July 21-22 |
MPG members make oral and poster presentations on The 8th Ultra-Steel Workshop
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| July 20 |
Pingguang XU's research was appeared in STX-21 news for July, 2004 (only in Japanese)
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June 15
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New Publication
A. Ohmori, S. Torizuka and K. Nagai, Strain-hardening due to dispersed cementite for low carbon ultrafine-grained steels, ISIJ Intl, Vol.44 (2004), No. 6, pp1063-1071
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| May 22 |
The Japan Siciety for Technology of Plasticity Award for the young and vigorous researcher for FY2004
T. Inoue
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| April 26 |
Member page and Pos-doc page was updated.
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| April 10 |
New Publication
K. Nagai, , Ultra Steel-Creation of Ultra Steel from Steel Scrap, Expected Materials for the Future, Vol.4, No.4 (2004) pp41-47
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| Mar.30 |
Award & New Publication
* Sawamura Award for the outstanding papers published in ISIJ international of the Iron and Steel Institute of Japan (2003)
N. Yoshida, O. Umezawa and K. Nagai, Influence of Phosphorus on Solidification Structure in Continuously Cast 0.1 mass% Carbon Steel, ISIJ International, 43, 3 (2003) 348-357
*The Japan Institute of Metals Award for Performance (2003)
S. Torizuka
*New Publication
N. Yoshida, N. Kobayashi and K. Nagai, Prediction of As-cast Austenite Grain Size for Near-net-shape CC, Tetsu-to-Hagane, 90 (2004) 4, pp198-205
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| Mar.15 |
New Publication
N. Yoshida, O. Umezawa and K. Nagai, Analysis on refinement of columnar γ grain by phosphorus in continuously cast 0.1 mass% carbon steel, ISIJ International, 44 (2004) 3, pp547-555
T. Hanamura, F. Yin and K. Nagai, Ductile-brittle transition temperature of ultrafine ferrite/cementite microstructure in a low carbon steel controlled by effective grain size, ISIJ Int'l, 44 (2004) 3, pp610-617
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| Mar.5 |
New Publication
"Improvement of Yield Strength and Work Hardening Ability by Nano-Scale Copper Sulfides in Steel by Zhongzhu LIU" was appeared in STX-21 News March, 2003. (only in Japanese)
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| Feb.20 |
New Publication
P. Xu, F. Yin and K. Nagai, Plastic Anistropy of Strip-Cast Low-Carbon Steels, Materials Transactions, 45, 2 (2004) pp447-456
Z. Liu, Y. Kobayashi and K. Nagai, Effect of Nano-Scale Copper Sulfide Particles on the Yield Strength and Work Hardening Ability in Strip Casting Low Carbon Steel, Materials Transactions, 45, 2 (2004) pp479-487
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| Feb.18 |
New Publication
F. Yin, T. Hanamura, T. Inoue and K. Nagai, " Fiber Texture and Substructural Features in the Caliber-Rolled Low-Carbon Steels", Metallurgical and Materials Transactions A -Physical Metallurgy and Materials Science, 35A, 2, pp. 665-677
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| Feb. 5 |
Members made poster presentations at "Tsukuba Technology Showcase 2004" at Epochal Tsukuba on Jan. 30. You can see pictures from here.
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| Jan. 15 |
New Publication
Y. Kobayashi, N. Yoshida and K. Nagai, "Thermodynamics of phosphorus in the MnO-SiO2-FetO system", ISIJ International, Vol.44 (2004), No. 1, pp21-26
N. Tsuchida, E.Baba, O. Umezawa, K. Nagai and Y. Tomota, "True stress-true strain relations with very low strain rates at room temperature for an austenitic 25Cr-19Ni steel", ISIJ International, Vol.44 (2004), No. 1, pp209-213
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| Nov.15 |
"Members" was updated.
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| Nov.15 |
New publicatin
T. Yamashita, S. Torizuka and K. Nagai "Effect of manganese segregation on fine-grained ferrite structure in low-carbon steel slabs", ISIJ International, 43, 11 (2003) pp1833-1841
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| Nov. 1 |
New publication
K. Nagai, "Ultra-steel based on comprehensive approach starting with solidification", KINZOKU, 73, 11 (2003) pp33-36
N. Tsuchida, Y. Tomota and K. Nagai, "Tensile Properties Obtrained by Static Tensile Tests in Ultrafine-grained Ferrite-Cementite Steels, Tetsu-to-Hagane, 89, 11 (2003) pp1170-1177
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| Sept. 22, 2003 |
New Publication
F. Yin, K. Nagai, K. Watanabe and K. Kawahara, "The Damping Behavior of Ni Added Mn-Cu Damping Alloys", Materials Transactions, 43, 9 (2003) pp1671-1674 |
| Sept. 16, 2003 |
New Publication
"Material Processing Development Based on Utilization of Scrap Steel", T. Inoue and K. Nagai, Journal of JSMS (Japanese), 52, 9, pp1107-1115
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| Aug. 18, 2003 |
New Publication
"Influence of Phosphorus Micro-Segregation on Ferrite Structure in Cast Strips of 0.1 mass% C Steel", O. Umezawa, K. Hirata and K. Nagai, was published in Material Transactions, 44, 7, pp1266-1270.
"Fracture Criterion of Single Fiber-Composite under Thermal and Tensile Loadings Based on Energy Release Rate", T. Inoue, S. Ochiai and M Hojo, was published in Journal of JSMS (only in Japanese), 52, 7, pp815-820.
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Jul. 17, 2003
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New Publication
"High-cycle fatigue fracture of high strength steels with modified microstructues, S. Shunsuke, O. Umezawa" was appeared in STX-21 News July, 2003. (only in Japanese)
"Phosphorus-induced dislocation structure variationin the warm-rolled ultrafine-grained low-carbon steels" F.Yin, T.Hanamura, O.Umezawa and K.Nagai was published in Materials Science & Engineering A 354 (2003) pp31-39
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Jul. 7-11, 2003
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New Publication
"Thickness of Pancake Austenite Controlling the Size of Ferrite Transformed from Variously Deformed Austenite", S. Torizuka and K. Nagai was presented at THERMEC'2003.
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Jul. 1, 2003
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New Publication
"Evolution of Ultrafine-grained Ferrite Structure through Multi-pass Warm Caliber-rolling", A. Ohmori, S. Torizuka, K. Nagai, N. Koseki and Y. Kogo, was publised in Tetsu-to-Hagane, Vol.89, No.7 (2003) pp781-788
"Properties of Warm-rolled Steel Plates with Ultrafine-grained Ferrite and Cementite Structures" , A. Ohmori, S. Torizuka and K. Nagai, was published in Tetsu-to-Hagane, Vol.89, No.7 (2003) pp765-772
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| Jun.24-25 2003 |
Group members made one oral presentation and 15 poster presentations at Seventh Workshop on the Ultra-Steel.
*"The State-ot-the-Arts of the Ultra-Steel Project", K. Nagai
*"Microstructual features contributing to the yield strength of warm-rolled ultrafine low-carbon steels", F.Yin
*"Effect of Shear Deformationon Refinement of Crystal Grains", T.Inoue
*"Material Processing Development Based on Utilization of Scrap Steel" T.Inoue
*"Strength-Toughness Balance of Impurity-Containing Fine Ferrite Structure-Usage of P Through Grain Refinng", T.Hanamura
*"Development of the melting and casting simulator for thin slab casting process with various cooling conditions", S.Iwasaki
*"Texture and Plastic Anisotropy of Low Carbon As-cast Steel Strips" , P.Xu,
*"Dynamic Restoration Process of Ni-30Fe Alloy during Hot Deformation " J.Cho
*"High-cycle Fatigue Fracture of High Strength Steels with Modified Microstructures", S.Shimakura
*"Refinement of Columnar Grain by Phosphorus in Continuously Cast 0.1 mass% Carbon Steel", N. Yoshida
*"Static tensile properties of ultrfine-grained ferrite-cementite steels", N.Tsuchida
*"Effect of Deformation Temperature and Strain Rate on Ultrafine Ferrite Grains formed by Single-Pass Large Strain-High Z Deformation", N.Koseki
*"Precipitation of Sulfide on Oxide in Steel during Solidification" , Z. Liu, Y.Kobayashi, K.Cai
*"Microstructure and abrasive wear resistance of grain boundary allotriomorphic ferrite/granular bainte duplex steel" , P.Xu, H. Fang, B. Bai
*"Effect of Mg Addition on Morphology, Composition and Size Distribution of Inclusions in Si/Mn/Ti Deoxidized Steels" H.Kim
*"Evaluation of the orientation distribution of intragranular ferrite grains dynamically formed during deformation in a V-added low carbon steel by EBSD", J.Cho
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| Jun.12, 2003 |
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| Oct. 1, 2002 |
Site was renewed. URL was changed from http://www.nims.go.jp/millennium/ to http://www.nims.go.jp/mpg/
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| Apr.1, 2002 |
Organization changed.
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