Effect of stress states on the deformation behavior of Cu-based bulk metallic glass in the supercooled liquid region

Journal Article · Thu Jan 24 00:00:00 EST 2013 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/j.jallcom.2013.01.031· OSTI ID:1134204

Park, Eun Soo ^[1]; Kim, Hyong June ^[1]; Bae, J. C. ^[2]; Huh, M. Y. ^[3]

---

1. Ames Laboratory
2. Kora Institute of Industrial Technology
3. Korea University

The effect of stress states on the deformation behavior of the Cu54Zr22Ti18Ni6 bulk metallic glass (BMG) alloy was studied in the supercooled liquid region. At 723 K, Newtonian plastic flow governed the deformation during the compression test, whereas strain-hardening occurred during the tensile test. At 733 K, a fast failure was observed during tensile test. The diffusion rate of Cu atoms in the BMG alloy plays an important role in the deformation behavior. The fast diffusion of Cu atoms under the tensile stress state caused faster crystallization leading to a fast strain-hardening during the tensile plastic deformation. Published by Elsevier B.V.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-07CH11358
• OSTI ID: 1134204
• Report Number(s): IS-J 8217
• Journal Information: Journal of Alloys and Compounds, Vol. 586; ISSN 0925-8388
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
amorphous-alloys
bulk metallic glass
crystallization behavior
Deformation behavior
diffusion
MECHANICAL-BEHAVIOR
SUPERCOOLED LIQUID REGION
superplastic deformation
viscous-flow