Nanoindentation characterized initial creep behavior of a high-entropy-based alloy CoFeNi
Artikel i vetenskaplig tidskrift, 2014

A crossover behavior in the initial creep stage during nanoindentation with a constant load for a high-entropy-based alloy CoFeNi is found. The holding time and stress in the indentation tests are evaluated to reveal the intrinsic mechanism of the crossover point. It indicated that the initial creep behavior is dominated by the strain-hardening at the beginning and then transit into the dislocation migration induced viscous stage. The transition presents the crossover, where the strain hardening effect predominates in a very short initial period while the viscous stage accounts for most of the initial creep stage with a time-dependent strain rate.

Författare

Z. J. Wang

Northwestern Polytechnical University

City University of Hong Kong

Sheng Guo

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Q. Wang

City University of Hong Kong

Z. Y. Liu

City University of Hong Kong

J. C. Wang

Northwestern Polytechnical University

Y. Yang

City University of Hong Kong

C. T. Liu

City University of Hong Kong

Intermetallics

0966-9795 (ISSN)

Vol. 53 183-186

Ämneskategorier

Materialteknik

DOI

10.1016/j.intermet.2014.05.007