Tensile properties of a novel W-NiTi heavy alloy with transforming matrix

Journal Article · Sat Dec 03 00:00:00 EST 2016 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI:https://doi.org/10.1016/j.msea.2016.12.014· OSTI ID:1616295

Shao, Yang ^[1]; Guo, Fangmin ^[1]; Ren, Yang ^[2]; Cui, Lishan ^[1]

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1. China Univ. of Petroleum, Beijing (China)
2. Argonne National Lab. (ANL), Argonne, IL (United States)

A new class of W-NiTi heavy alloy was prepared by infiltration and vacuum hot pressing. The W-NiTi heavy alloy containing 90 wt% tungsten of particle size 2-8 gm exhibited excellent tensile properties of the tensile strength (1120 MPa) and elongation (7.8%). In situ synchrotron diffraction experiments provided clear evidence on the reorientation of B19'-NiTi martensite at the initial stage of the deformation and the martensitic transformation from B2-NiTi to B19'-NiTi martensite. Finally, the strain hardening of the heavy alloy resulted from the deformation of the martensite phase and the strain hardening of tungsten particles.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: National 973 Program of China; National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1616295
• Journal Information: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Journal Name: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing Journal Issue: C Vol. 683; ISSN 0921-5093
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NiTi matrix
in-situ synchrotron diffraction
martensitic transformation
tungsten heavy alloy