本文選題：TB鈦合金 + 熱處理　； 參考：《鈦工業(yè)進(jìn)展》2015年06期

【摘要】：研究了常規(guī)固溶+時(shí)效、雙時(shí)效及固溶+預(yù)時(shí)效+時(shí)效處理對熱加工態(tài)TB2鈦合金顯微組織及力學(xué)性能的影響。顯微組織研究表明:通過增加低溫預(yù)時(shí)效工藝,可以使經(jīng)熱處理后的TB2鈦合金中析出的次生α相較經(jīng)常規(guī)固溶+時(shí)效處理后的更加均勻、細(xì)小。力學(xué)性能分析表明:經(jīng)常規(guī)固溶+時(shí)效處理后,TB2鈦合金的塑性較好,但強(qiáng)度偏低;雙時(shí)效處理可以提高TB2鈦合金的強(qiáng)度,但塑性較差;固溶+預(yù)時(shí)效+時(shí)效處理后,TB2鈦合金的強(qiáng)度與塑性匹配良好。進(jìn)一步熱處理工藝研究表明:經(jīng)780℃×1 h/AC+350℃×6 h/AC+560℃×8 h/AC熱處理后,TB2鈦合金的強(qiáng)度與塑性達(dá)到最優(yōu)匹配,抗拉強(qiáng)度為1 190 MPa,延伸率為14%。
[Abstract]:The effects of conventional solution aging, double aging and solution preaging on microstructure and mechanical properties of hot-worked TB2 titanium alloy were studied. The microstructure study shows that the secondary 偽 phase precipitated in TB2 titanium alloy after heat treatment can be more uniform and fine than that after conventional solution aging by adding low temperature preaging technology. The mechanical properties analysis showed that the ductility of TB2 titanium alloy was better, but the strength was lower, the strength of TB2 titanium alloy could be improved by double aging treatment, but the plasticity of TB2 titanium alloy was poor. The strength and plasticity of TB2 titanium alloy are well matched after solution preaging treatment. Further study on heat treatment shows that after heat treatment at 780 鈩，

本文編號(hào)：2086170