TY - JOUR
T1 - Tensile deformation behavior and phase transformation in the weld coarse-grained heat-affected zone of metastable high-nitrogen Fe-18Cr-10Mn-N stainless steel
AU - Moon, Joonoh
AU - Lee, Tae Ho
AU - Park, Seong Jun
AU - Jang, Jae Il
AU - Jang, Min Ho
AU - Ha, Heon Young
AU - Hwang, Byoungchul
PY - 2013/7
Y1 - 2013/7
N2 - 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 δ-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 micro structures was carefully investigated and discussed in terms of changes of stacking fault energy.
AB - 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 δ-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 micro structures was carefully investigated and discussed in terms of changes of stacking fault energy.
UR - http://www.scopus.com/inward/record.url?scp=84893637785&partnerID=8YFLogxK
U2 - 10.1007/s11661-013-1682-2
DO - 10.1007/s11661-013-1682-2
M3 - Article
AN - SCOPUS:84893637785
SN - 1073-5623
VL - 44
SP - 3069
EP - 3076
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 7
ER -