Tensile and compressive behavior of Ti-based bulk metallic glass composites

Tensile and compressive behavior of Ti-based bulk metallic glass composites
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钛基大块金属玻璃复合材料的拉伸和压缩行为

DOI:
10.1007/s12613-013-0769-5
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发表时间:
2013-06
影响因子:
4.8
通讯作者:
Lin, Jun-pin
Lin, Jun-pin
中科院分区:
材料科学2区
文献类型:
--
作者:
Wang, Yong-sheng;Hao, Guo-jian;Lin, Jun-pin

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研究了钛基大块非晶复合材料(BMGC)的拉伸和压缩特性。单轴拉伸时,屈服应力为1380 MPa,最大强度为1516 MPa,断裂应变为4.3%;单轴压缩时,屈服应力为1580 MPa,最大强度为4010 MPa,断裂应变为29%。复合材料在压缩下表现出线性的“加工硬化”能力;然而,在拉伸载荷下的真实工程应力-应变曲线中观察到“加工软化”行为。在不同载荷下,试样的断裂面也表现出不同的性能。
This article focuses on the tensile and compressive characteristics of a Ti-based bulk metallic glass composite (BMGC). It is found that the yield stress, maximum strength, and fracture strain are 1380 MPa, 1516 MPa, and 4.3% for uniaxial tension, but 1580 MPa, 4010 MPa, and 29% for uniaxial compression, respectively. The composite displays a linear “work hardening” capacity under compression; however, the “work softening” behavior is observed in the true engineering stress-strain curve upon tensile loading. The fracture surfaces of specimens also exhibit dissimilar properties under the different loadings.
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