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通过粉末冶金和热加工方法制备氧含量为0.42％～0.54％(质量分数)的Ti?Zr合金.结果表明:Ti?Zr合金由具有相同α相结构的富Zr区和贫Zr区组成,富Zr区域的氧含量较高,且晶粒尺寸较小.Ti?Zr合金同时具有高强度(σs=700～900 MPa)和高的总伸长率(>20％),而氧的固溶强化是主要的强化机制.Zr由于与Ti具有高度结构相似性,对氧诱发Ti合金脆化的影响不大.因此,0.54％(质量分数)的高含量值仍处于韧性到脆性转变的临界氧含量范围内,不明显降低材料的延展性.“,”Ti?Zr alloys (oxygen content 0.42?0.54 wt.％) were prepared via powder metallurgy and hot working. The results indicate that the Ti?Zr alloys exhibit Zr-rich and Zr-lean areas with the same α-phase structure, and the Zr-rich area shows a slightly higher oxygen content and a much finer grain size. The Ti?Zr alloys present a good combination of high strength (σs=700?900 MPa) and total elongation (>20％), and solid solution strengthening of oxygen plays a major role. Zr does not influence much the oxygen-induced brittleness due to its high structural similarity to Ti. Therefore, the high value of 0.54 wt.％ is still within the critical oxygen content for the ductile-to-brittle transition of Ti and does not degrade the ductility.