Ti80 (Ti-6Al-3Nb-2Zr-1Mo) is a recently developed near-α titanium alloy that is generally applied in marine applications. In this study, the feasibility of producing the Ti80 alloy via the blended elemental powder metallurgy (BEPM) press-and-sinter method was demonstrated. Generally, the presence of elements with low diffusion mobility in titanium (Mo, Nb) creates difficulties with diffusion-controlled healing of the porosity and the realization of microstructural uniformity. These issues were minimized by using titanium hydride powder instead of titanium powder to activate the sintering, as well as by the proper selection of complex alloying powders rather than elemental powders to promote alloy uniformity. The sintering time-temperature conditions to obtain a chemically and microstructurally homogeneous and nearly-dense alloy microstructure were determined. Special attention was given to the microstructural peculiarities of the sintered material to regulate its mechanical characteristics. Finally, the processing parameters were determined to reach the properties required by alloy specifications. This enabled both the fully beta transformed lamellar microstructure inherent to beta phase field sintering and one that could be modified via post sintering thermomechanical processing.

Ti80（Ti-6Al-3Nb-2Zr-1Mo）是近来开发的近α钛合金，通常用于海洋应用。在这项研究中，证明了通过混合元素粉末冶金（BEPM）压铸法生产Ti80合金的可行性。通常，钛（Mo，Nb）中扩散迁移率低的元素的存在为孔隙的扩散控制修复和微结构均匀性的实现带来了困难。这些问题通过使用氢化钛粉末，而不是钛粉末以激活烧结，以及由复杂的合金粉末，而不是元素粉末的适当选择，以促进均匀性合金最小化。确定了获得化学和微观结构均匀且接近致密的合金微观结构的烧结时间-温度条件。特别注意了烧结材料的微观结构特性，以调节其机械特性。最后，确定加工参数以达到合金规格要求的性能。这既可以实现β相场烧结固有的完全经过β转换的层状微结构，又可以通过烧结后热机械加工对其进行修饰。