7 records found.
Grain refinement of dual phase steel maximizes deformation ability of martensite, leading to simultaneous enhancement of strength and ductility
- Journal article
- Creator
-
;Myeong-heom Park (author) (Search by this author)Akinobu Shibata (author) (Search by this author)National Institute for Materials Science
;
;Stefanus Harjo (author) (Search by this author)Nobuhiro Tsuji (author) (Search by this author) - Keyword
- Strength-ductility synergy, Strain-hardening, Stress/strain partitioning, Deformation constraint, Digital image correlation (DIC), In-situ neutron diffraction during deformation
- Date published
- 2025-04-16
- Updated at
- 2025-12-09 16:30:13 +0900
Grain size effects on strain localization and fracture behavior in ferrite–martensite dual-phase steels characterized by digital image correlation analysis
- Journal article
- Creator
-
;Myeong-heom Park (author) (Search by this author);Yuichi Tagusari (author) (Search by this author)Akinobu Shibata (author) (Search by this author)National Institute for Materials Science
;
Nobuhiro Tsuji (author) (Search by this author)
- Keyword
- Dual phase steel, Mechanical properties, Digital image correlation (DIC), Strain distribution, Micro void, Fracture
- Date published
- 2025-06-23
- Updated at
- 2025-12-09 16:30:11 +0900
Mechanism of simultaneous increase of strength and ductility with grain refinement in Si-added high-Mn austenitic steel
- Journal article
- Creator
-
;Sukyoung Hwang (author) (Search by this author);Yu Bai (author) (Search by this author);Si Gao (author) (Search by this author);Myeong-Heom Park (author) (Search by this author)Akinobu Shibata (author) (Search by this author)National Institute for Materials Science
;
Nobuhiro Tsuji (author) (Search by this author)
- Keyword
- high-Mn austenitic steel, Si addition, grain refinement, ε-martensitic transformation, fracture surface topography analysis (FRASTA)
- Date published
- 2024-02-03
- Updated at
- 2026-02-03 12:30:15 +0900
Origin of the trade-off relationship between tensile strength and hydrogen embrittlement resistance
- Journal article
- Creator
-
Kazuho Okada (author) (Search by this author)
;
;Yukihisa Watase (author) (Search by this author)Myeong-heom Park (author) (Search by this author)
https://orcid.org/0009-0006-1965-2676
(unauthenticated)
;
;Kaneaki Tsuzaki (author) (Search by this author)Akinobu Shibata (author) (Search by this author)
- Keyword
- 高強度鋼, 水素脆化, 応力集中
- Date published
- 2025-10-30
- Updated at
- 2025-11-13 08:30:03 +0900
Real-time Observation of Stress-strain Behavior beyond Necking in Martensitic Steel by in-situ Synchrotron X-ray Diffraction
- Journal article
- Creator
-
Avala Lavakumar (author) (Search by this author)
https://orcid.org/0000-0001-8287-8607
(unauthenticated)
;
;Sukyoung Hwang (author) (Search by this author)Kazuho Okada (author) (Search by this author)
;
;Myeong-heom Park (author) (Search by this author);Atul Haris Chokshi (author) (Search by this author)Nobuhiro Tsuji (author) (Search by this author)
https://orcid.org/0000-0002-2132-1327
(unauthenticated)
- Keyword
- Martensitic Steel, in-situ Synchrotron X-ray Diffraction, Necking
- Date published
- 2024-10-15
- Updated at
- 2024-11-07 16:30:41 +0900
Mechanism of DSA effect correlating to the macroscopic PLC banding in high-Mn austenitic steel
- Journal article
- Creator
-
;Sukyoung Hwang (author) (Search by this author);Myeong-Heom Park (author) (Search by this author);Yu Bai (author) (Search by this author);Avala Lavakumar (author) (Search by this author)Akinobu Shibata (author) (Search by this author)National Institute for Materials Science
;
;Hiroki Adachi (author) (Search by this author);Masugu Sato (author) (Search by this author)Nobuhiro Tsuji (author) (Search by this author)
- Keyword
- Portevin–Le Chatelier (PLC) band, dynamic strain aging (DSA), digital image correlation (DIC), in-situ synchrotron XRD, Average dislocation velocity
- Date published
- 2024-05-20
- Updated at
- 2024-11-05 16:59:59 +0900
Exploring unusual Lüders deformation in ultrafine-grained high-Mn austenitic steel
- Journal article
- Creator
-
;Sukyoung Hwang (author) (Search by this author);Hirokazu Kato (author) (Search by this author)Kazuho Okada (author) (Search by this author)National Institute for Materials Science
;
;Myeong-heom Park (author) (Search by this author);Avala Lavakumar (author) (Search by this author);Reza Gholizadeh (author) (Search by this author);Hiroki Adachi (author) (Search by this author);Masugu Sato (author) (Search by this author)Nobuhiro Tsuji (author) (Search by this author)
- Keyword
- High-Mn austenitic steel, yield point, Lüders deformation, ultrafine grains, TWIP effect
- Date published
- 2024-08-02
- Updated at
- 2024-08-27 16:30:35 +0900