Tensile Deformation of Ultrafine-Grained Fe-Mn-Al-Ni-C Alloy Studied by In Situ Synchrotron Radiation X-ray Diffraction

Crystals

Akinobu Shibata¹  Wenqi Mao¹  Si Gao¹  Takuma Yoshimura¹  Yu Bai¹  Nobuhiro Tsuji¹  Hiroki Adachi²  Myeong-heom Park³  Wu Gong³  Masugu Sato⁴ 

[1] Department Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan;Department of Materials and Synchrotron Radiation Engineering, Graduate School of Engineering, University of Hyogo, Himeji 671-2280, Japan;Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University, Kyoto 606-8501, Japan;Japan Synchrotron Radiation Research Institute (JARSI), Sayo-gun, Hyogo 679-5198, Japan;

关键词: ultrafine-grained materials;    intermetallic compounds;    B2 phase;    strain hardening behavior;    synchrotron radiation X-ray diffraction;   

DOI  :  10.3390/cryst10121115

来源: DOAJ

【 摘 要 】

Intermetallic compounds are usually considered as deleterious phase in alloy designing and processing since their brittleness leads to poor ductility and premature failure during deformation of the alloys. However, several studies recently found that some alloys containing large amounts of NiAl-type intermetallic particles exhibited not only high strength but also good tensile ductility. To clarify the role of the intermetallic particles in the excellent tensile properties of such alloys, the tensile deformation behavior of an ultrafine-grained Fe-Mn-Al-Ni-C alloy containing austenite matrix and B2 intermetallic particles was investigated by using in situ synchrotron radiation X-ray diffraction in the present study. The elastic stress partitioning behavior of two constituent phases during tensile deformation were quantitively measured, and it was suggested that B2 particles played an important role in the high strength and large tensile ductility of the material.

【 授权许可】

Unknown