Yield criterion and unified strength theory of Zr-based bulk metallic glass

Author

Demin Chen ; Yueyin Ma ; Guoqiang Liu ; Wei Sun ; Xiaolin Guo ; Xaofei Shi

Author_Institution

Dept. of Mech. Eng., Acad. of Armored Force Eng., Beijing, China

Volume

5

fYear

2011

fDate

12-14 Aug. 2011

Firstpage

2702

Lastpage

2705

Abstract

Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 bulk metallic glass (BMG) alloy obeys different yield criterions under different stress states. In order to accurately describe yield behavior of BMG alloy and clarify the effect of middle principal stress on material yield and fracture, Unified Strength Theory is introduced to study plastic yield behavior of BMG alloy. The unified expression of yield function and its corresponding yield locus on π plane of Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 BMG alloy are obtained.

Keywords

beryllium alloys; copper alloys; fracture; metallic glasses; nickel alloys; plastic deformation; titanium alloys; yield strength; yield stress; zirconium alloys; Zr-based bulk metallic glass; Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5; fracture; material yield; middle principal stress; plastic yield behavior; stress states; unified strength theory; yield criterion; Glass; Mechanical engineering; Metals; Plastics; Presses; Stress; π plane; Unified Strength Theory; bulk metallic glass (BMG) alloy; yield locus;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on

Conference_Location

Harbin, Heilongjiang, China

Print_ISBN

978-1-61284-087-1

Type

conf

DOI

10.1109/EMEIT.2011.6023025

Filename

6023025