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发明公开
CN103627928A 一种低温高强两相钛合金 有权

一种低温高强两相钛合金
摘要：
本发明提供了一种低温高强两相钛合金，由以下质量百分比的成分组成：Al1.5～3.5%，Nb4.5～6.5%，Mo1.2～3%，余量为钛和不可避免的杂质。本发明钛合金在20K低温条件下的力学性能满足：Rm≥1400MPa，Rp0.2≥1100MPa，A≥20%，比传统的低温钛合金具有更加优异的强塑性匹配，满足高性能火箭、航天器及宇宙飞船中低温部件的相关要求。
摘要（英）：

The invention provides a low-temperature-resistant and high-strength two-phase titanium alloy. The low-temperature-resistant and high-strength two-phase titanium alloy comprises the following components in percentage by mass: 1.5-3.5% of Al, 4.5-6.5% of Nb, 1.2-3% of Mo and the balance of titanium and unavoidable impurities. At a low temperature of 20K, the low-temperature-resistant and high-strength two-phase titanium alloy has mechanical properties as follows: Rm is greater than or equal to 1400MPa, Rp0.2 is greater than or equal to 1100MPa, and A is greater than or equal to 20%; compared with the conventional low-temperature-resistant titanium alloy, the low-temperature-resistant and high-strength two-phase titanium alloy has more excellent strength-plasticity matching, and can meet relevant requirements on low-temperature-resistant components of high-performance rocket, spacecrafts and spaceships.

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