(1. 西部金属材料开发有限公司，西安 710016；2. 西安赛特金属材料开发有限公司，西安 710016)
摘 要: 采用正交设计的方法，通过测定试验合金的力学性能、点阵常数、弹性模量，系统研究了Ti-Al-Mo-Zr合金系中单一合金元素Al、Mo、Zr和Al-Mo、Al-Zr、Mo-Zr合金元素之间的交互作用对力学性能和显微组织的影响，并给出了合金成分与力学性能间的定量关系式。
关键字: Ti-75合金；正交设计；强化机制
（1. West Metal Material Co., Ltd., Xi’an 710016, China; 2. Xi’an Saite Metal Material Co., Ltd., Xi’an 710016, China）
Abstract:The mechanical properties, lattice constant and elastic modulus of alloys were measured by using orthogonal experiment. The effects of Al, Mo, Zr elements and interactions of Al-Mo, Al-Zr and Mo-Zr on microstructure and mechanical properties of alloys were also studied. At last, equation between alloy constituent and mechanical properties was set up.
Key words: Ti-75 alloy; orthogonal design; strengthening mechanism
