Strong work-hardening behavior in a Ti-based bulk metallic glass composite
Strong work-hardening behavior in a Ti-based bulk metallic glass composite
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DOI：
10.1016/j.scriptamat.2013.03.004
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发表时间：
2013-07
影响因子：
6
通讯作者：
Z. Y. Zhang;Yuan Wu;J. Zhou;H. Wang;Xiongjun Liu;Zhenwen Lu
中科院分区：
文献类型：
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作者：
Z. Y. Zhang;Yuan Wu;J. Zhou;H. Wang;Xiongjun Liu;Zhenwen Lu
研制了一种断裂强度达3GPa、塑性达18.3%、加工硬化能力强的钛基大块非晶复合材料。结果表明，B2-（Ti，Zr）（Cu，Ni）合金的力学性能提高主要是由于晶界上纳米ZrTiCu 2和CuTi 2相的析出强化，使B2-（Ti，Zr）（Cu，Ni）合金产生了严重的约束变形。此外，B2相应变诱发马氏体相变的发生也有利于合金的宏观性能。
A Ti-based bulk metallic glass composite showing high fracture strength of 3GPa, large plasticity of 18.3% and strong work-hardening behavior was developed. It was found that the enhanced properties could be mainly attributed to the severely confined deformation of B2-(Ti, Zr)(Cu, Ni) as a result of the precipitation strengthening from the nanosized ZrTiCu2and CuTi2phases located in its grain boundaries. Additionally, the occurrence of the strain-induced martensitic transformation of the B2 phase is also beneficial for the macroscopic properties.