REVEALING THE ABRASION RESISTANCE OF META-STABLE TITANIUM ALLOYS USING MULTI-PASS DUAL-INDENTER TESTS
REVEALING THE ABRASION RESISTANCE OF META-STABLE TITANIUM ALLOYS USING MULTI-PASS DUAL-INDENTER TESTS
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DOI：
10.17222/mit.2020.018
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发表时间：
2021-06
影响因子：
0.5
通讯作者：
Hui Xiao;Can Huang;Jian Chen;Cong Li
中科院分区：
文献类型：
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作者：
Hui Xiao;Can Huang;Jian Chen;Cong Li
采用多道次双压头（MPDI）划痕试验研究了Ti-5Al-4 Zr-4 Mo-2Cr-2Sn-1Fe合金在不同载荷条件下的反复局部滑动接触磨损性能。不同的热处理工艺可获得不同的显微组织。揭示了相形态对涂层抗划伤性能的影响及相应的失效机理。结果表明，相形态对涂层的抗划伤性有很大的影响，且这种影响与接触载荷有关。在低载荷条件下，划痕行为与初始表面硬度有关，而在高载荷条件下，加工硬化能力更相关。
The abrasion resistance of the Ti-5Al-4Zr-4Mo-2Cr-2Sn-1Fe alloy was investigated using multi-pass dual-indenter (MPDI) scratch tests with different loading conditions under a repetitive local sliding contact. Various microstructures were obtained with different heat treatments. The effect of the phase morphology on the scratch resistance and corresponding failure mechanisms were revealed. Results show that the phase morphology has a great influence on the scratch resistance and that the effect is contact-load dependent. The scratch behaviour is linked to the initial surface hardness at low loading conditions, while the work-hardening ability is more relevant at high loading conditions.