Deformation Micromechanisms of a Ti-based Metallic Glass Composite with Excellent Mechanical Properties

摘要：

　　A Ti-based metallic glass composite with composition of Ti48Zr20Nb12Cu5Be15 exhibits good ambient plasticity in tensile and compressive loading.The macro and micro mechanisms during deformation have been investigated systematically.Obvious asymmetry between the tensile and compressive properties of the composite has been observed,indicating amorphous matrix effect on the metallic glass composite.The micro fracture mechanism of dendrites in compression can also be attributed to two mechanisms: shear induced fracture in major and tension induced fracture in local,revealing a constraint of matrix induced complex stress state in composite.Pile-ups of dislocations in dendrites cause work-hardening of composite,and the impedance of dendrites to shear bands is responsible for the improvement of plastic strain.

关键词： Metallic Glass Composites Mechnical properties Micromechanism

作者: Jie Bai Jinshan Li Houchao Kou Peng Wang Jun Wang Bing Tang Hong Zhong

作者单位: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an,Shaanxi Province, China, 710072

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 809-814

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）