Evaluation of the dislocation density and dislocation character in cold rolled Type 304 steel determined by profile analysis of X-ray diffraction

✍ Scribed by Takashi Shintani; Yoshinori Murata

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 787 KB
• Volume: 59
• Category: Article
• ISSN: 1359-6454
• DOI: 10.1016/j.actamat.2011.03.055

✦ Synopsis

The mechanical properties of Type 304 austenitic stainless steel change considerably on cold rolling at room temperature because of the formation of strain-induced a 0 martensite phase and work hardening induced by an increase in the dislocation density in the c phase. In this study these two phenomena were investigated quantitatively by profile analysis of the X-ray diffraction. We show that the strengthening mechanism in cold rolled Type 304 steel changes with differences in the dislocation density between the c and the a 0 phase. When the difference is large the mechanical properties of the steel depend on the volume fraction of the a 0 phase. On the other hand, when the difference is small the properties do not depend on the volume fraction of the a 0 phase but instead depend on the dislocation density and dislocation character in the c phase.