Deformation Microstructure and Deformation-Induced Martensite in Austenitic Fe-Cr-Ni Alloys Depending on Stacking Fault Energy

详细信息    查看全文

• 作者：Ye Tian ; Oleg I. Gorbatov ; Annika Borgenstam…
• 刊名：Metallurgical and Materials Transactions A
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：48
• 期：1
• 页码：1-7
• 全文大小：2418KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials; Characterization and Evaluation of Materials; Structural Materials; Surfaces and Interfaces, Thin Films; Nanotechnology;
• 出版者：Springer US
• ISSN：1543-1940
• 卷排序：48

文摘

The deformation microstructure of austenitic Fe-18Cr-(10-12)Ni (wt pct) alloys with low stacking fault energies, estimated by first-principles calculations, was investigated after cold rolling. The ɛ-martensite was found to play a key role in the nucleation of α′-martensite, and at low SFE, ɛ formation is frequent and facilitates nucleation of α′ at individual shear bands, whereas shear band intersections become the dominant nucleation sites for α′ when SFE increases and mechanical twinning becomes frequent.