摘要
对Ti150合金棒材进行了990、1 000、1 010、1 020、1 030℃×2 h/OQ+700℃×2 h/AC固溶时效处理,研究了固溶温度对合金显微组织和力学性能的影响。结果表明:随着固溶温度的升高,初生α相含量减少,次生α相含量不断增加;室温、高温拉伸性能随固溶温度的升高变化明显,蠕变性能随温度的升高而提高。综合分析,经过1 020℃×2 h/OQ+700℃×2 h/AC固溶时效处理后,Ti150合金棒材的综合性能最佳。
Ti150 alloy bars were treated at 990,1 000,1 010,1 020 and 1 030 ℃ × 2 h/OQ + 700 ℃ × 2 h/AC,and the effect of solution temperature on microstructures and mechanical properties of Ti150 alloy bars was studied. The results show that,with the increase of solution temperature,the content of primary α phase decreases,and the content of secondary α phase increases. The mechanical properties at room temperature and high temperature change obviously with the increase of solution temperature,and the creep performance increases with increasing temperature. Based on the comprehensive analysis,the best combination properties of Ti150 alloy bar can be get under the solution aging treatment of 1 020 ℃ × 2 h/OQ + 700 ℃ × 2 h/AC.
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