Tailoring deformation-induced martensitic transformation through cellular engineering in laser powder bed fusion processed 316L stainless steel

被引：0

作者：

Jeong, Sang Guk ^{[1
]}

Kim, Eun Seong ^{[1
]}

Kwon, Hyeonseok ^{[1
]}

Ahn, Soung Yeoul ^{[1
]}

Choe, Jungho ^{[1
,2
]}

Karthik, Gangaraju Manogna ^{[3
]}

Heo, Yoon-Uk ^{[4
]}

Kim, Hyoung Seop ^{[1
,4
,5
,6
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea

[2] Korea Inst Mat Sci KIMS, Dept 3D Printing Mat, Chang Won 51508, South Korea

[3] Indian Inst Technol BHU, Dept Mech Engn, Varanasi 221005, India

[4] Pohang Univ Sci & Technol POSTECH, Grad Inst Ferrous & Eco Mat Technol GIFT, Pohang 37673, South Korea

[5] Yonsei Univ, Inst Convergence Res & Educ Adv Technol, Seoul 03722, South Korea

[6] Tohoku Univ, Adv Inst Mat Res WPI AIMR, Sendai 9808577, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2024年 / 898卷

基金：

新加坡国家研究基金会;

关键词：

Laser powder bed fusion process; Deformation-induced martensitic; transformation; Cellular structure; 316L stainless steel; Cryogenic applications; STRAIN-INDUCED MARTENSITE; STACKING-FAULT ENERGY; BEHAVIOR; TEMPERATURE; NUCLEATION; DUCTILITY; MECHANISM; STRENGTH;

D O I：

10.1016/j.msea.2024.146383

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructural effect of 316L stainless steel (SS) fabricated by laser powder bed fusion on deformationinduced martensitic transformation (DIMT) was investigated. Both opposing effects, i.e., disturbing/promoting DIMT were observed. While the cellular structure and low-angle grain boundaries reduce the DIMT rate by disturbing shear band formation, the high dislocation density can activate direct BCC martensite nucleation and accelerate the DIMT. This observation suggests that controlling the two competing effects is the key to cellular engineering using additive manufacturing.

引用

页数：7