Tensile Deformation Behavior and Phase Transformation in the Weld Coarse-Grained Heat-Affected Zone of Metastable High-Nitrogen Fe-18Cr-10Mn-N Stainless Steel
- Authors
- Moon, Joonoh; Lee, Tae-Ho; Park, Seong-Jun; Jang, Jae-Il; Jang, Min-Ho; Ha, Heon-Young; Hwang, Byoungchul
- Issue Date
- Jul-2013
- Publisher
- SPRINGER
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.44A, no.7, pp.3069 - 3076
- Indexed
- SCIE
SCOPUS
- Journal Title
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
- Volume
- 44A
- Number
- 7
- Start Page
- 3069
- End Page
- 3076
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/162384
- DOI
- 10.1007/s11661-013-1682-2
- ISSN
- 1073-5623
- Abstract
- The tensile deformation behavior and phase transformation in the weld coarse-grained heat-affected zone (CGHAZ) of a metastable high-nitrogen austenitic stainless steel was explored through tensile tests, nanoindentation experiments, and transmission electron microscopy analysis. True stress-strain response during tensile test was found to be seriously affected by delta-ferrite fraction, which depends on peak temperature of the CGHAZs. The strain-induced martensitic transformation (SIMT) occurred in base steel, whereas the SIMT disappeared and deformation twinning occurred predominantly in the CGHAZs. The relationship among true stress-strain response, nanoindentation hardness, and deformed microstructures was carefully investigated and discussed in terms of changes of stacking fault energy.
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