A Comparative Study on Fatigue Performance of Various Additively Manufactured Titanium Alloys
A Comparative Study on Fatigue Performance of Various Additively Manufactured Titanium Alloys
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DOI：
10.1016/j.prostr.2022.03.052
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Mohammad Salman Yasin;A. Soltani-Tehrani;Shuai Shao;M. Haghshenas;N. Shamsaei
中科院分区：
文献类型：
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作者：
Mohammad Salman Yasin;A. Soltani-Tehrani;Shuai Shao;M. Haghshenas;N. Shamsaei
钛合金因其优异的强度重量比、生物相容性和耐腐蚀性，在航空航天和医疗领域得到了广泛的应用。虽然这些合金很难加工，但它们通常是可焊接的。因此，各种钛基合金最近被考虑通过添加制造技术来生产。添加制造的钛合金用于生产各种高性能部件，这些部件通常承受循环或周期性载荷。虽然最常用的钛合金(即Ti-6Al-4V)已经得到了广泛的表征，但在许多其他考虑用于添加剂制造的钛合金的疲劳性能方面，文献中还存在一个空白。本研究旨在评估两种添加处理的钛基合金：Ti-5Al-5V-5Mo-3CR和Ti-5Al-5Mo-5V-1Cr-1Fe的显微组织、力学性能和疲劳性能，并将其结果与已有研究的Ti-6Al-4V的结果进行比较。本研究使用EOS M290激光粉末床熔合(LB-PBF)添加剂制造设备制备了各种钛合金的试件。对试件的孔隙率、微结构、拉伸和疲劳行为进行了表征和并排比较。
Titanium alloys have been used extensively in aerospace and medical applications due to their exceptional strength to weight ratio, biocompatibility, and corrosion resistance. While these alloys are known to be difficult to machine, they are typically weldable. Therefore, various titanium-based alloys have been recently considered for production via additive manufacturing technology. Additively manufactured titanium alloys are used to produce a wide range of high-performance components, which are often under cyclic or periodic loading. While the most commonly used titanium alloy (i.e. Ti-6Al-4V) has been extensively characterized, there is a gap in the literature with regards to the fatigue performance of many other titanium alloys considered for additive manufacturing. This study aims at assessing the microstructural, mechanical, and fatigue performance of two additively manufactured titanium-based alloys, Ti-5Al-5V-5Mo-3Cr and Ti-5Al-5Mo-5V-1Cr-1Fe, and comparing the results with the ones for the well-studied Ti-6Al-4V. An EOS M290 laser beam powder bed fusion (LB-PBF) additive manufacturing machine is used to fabricate specimens from various titanium alloys for this study. Specimens are characterized and compared side by side for their porosity, microstructure, tensile, and fatigue behavior.