Flexural Strength and Weibull Analysis of Bulk Metallic Glasses  

作　　者：Jijun Zhang Diana Estevez Yuan-Yun Zhao Lishan Huo Chuntao Chang Xinmin Wang Run-Wei Li 

机构地区：[1]Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China [2]Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sdences,Ningho 315201,China

出　　处：《Journal of Materials Science & Technology》2016年第2期129-133,共5页材料科学技术（英文版）

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(Grant No.Q12E010015);the Ningbo Municipal Natural Science Foundation(Grant No.2015A610074)

摘　　要：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 Zr48Cu45AI7 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.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 Zr48Cu45AI7 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.

关 键 词：Bulk metallic glasses Ceramics Weibu Umodulus Flexural strength Mechanical properties 

分 类 号：TG139.8[一般工业技术—材料科学与工程]