Flexural Strength and Weibull Analysis of Bulk Metallic Glasses

doi:10.1016/j.jmst.2015.12.016

Abstract

Abstract: The flexural strength reliability of bulk metallic glasses (BMGs) plates is analyzed using Weibull statistics. The Weibull modulus (m) and characteristic strength (σ₀) of the Zr₄₈Cu₄₅Al₇ BMG are 34 and 2630?MPa, respectively, which are much higher than the values of fine ceramics (m?<?30, σ₀?<?1600?MPa). In particular, the m values obtained by flexural strength and compressive strength statistics of the Mg₆₁Cu₂₈Gd₁₁ BMG are 5 and 33, respectively, indicating that the m values of BMGs are test method dependent, and only the m values obtained by flexural strength statistics can be used to make a convincible comparison with those of ceramics.

Key words: Bulk metallic glasses, Ceramics, Weibull modulus, Flexural strength, Mechanical properties

Jijun Zhang, Diana Est, vez, Yuan-Yun Zhao, Lishan Huo, Chuntao Chang, Xinmin Wang, Run-Wei Li. Flexural Strength and Weibull Analysis of Bulk Metallic Glasses[J]. J. Mater. Sci. Technol., 2016, 32(2): 129-133.

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