以‘临界钼当量条件下的多元强化'为原则设计了1种新型的高强度亚稳β钛合金Ti-B20,并研究了该合金热轧棒材(φ12 mm～20 mm)在不同热处理条件下的拉伸性能及显微组织.同现有的一些亚稳β钛合金相比,该合金时效处理时的响应快、析出相分布均匀、硬化效应高,并且高温时效时没有发现无析出区;合金在β相变点以下固溶加时效处理有利于保持合金的塑性,在500℃～600℃的温度范围内时效时可以获得优良的强度和塑性匹配(UTS:1 200MPa～1 500 MPa;EL:8%～18%);而对热加工后的合金直接时效能产生更高的强化效果.
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