Cyclic deformation of superduplex stainless steels at intermediate temperatures

被引:4
|
作者
Girones, A. [1 ]
Llanes, L. [1 ]
Anglada, M. [1 ]
Mateo, A. [1 ]
机构
[1] Univ Politecn Catalunya, Dept Met Engn & Mat Sci, E-08028 Barcelona, Spain
来源
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 12期
关键词
D O I
10.1007/s11661-006-1047-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Cyclic deformation of a superduplex stainless steel at temperatures ranging from room temperature to 475 degrees C was evaluated for two different strain amplitudes. Cyclic hardening-softening response and the corresponding substructural features within each constituent phase of the alloy were characterized. Experimental evidence, such as abnormal cyclic hardening, inverse strain rate sensitivity (SRS), and serrated flow, reveals the existence of dynamic strain aging (DSA) in the studied temperature range. Substructural evolution suggests that DSA induces changes in the distribution of plastic strain between austenite and ferrite. In the case of tests performed at 475 degrees C, there exists a significant influence of thermal embrittlement too.
引用
收藏
页码:3519 / 3530
页数:12
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