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摘要：
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对TB2钛合金筒形件(管材)进行了变薄旋压成形试验,探讨了合金锻坯和挤压坯旋压变形后的组织性能、强化效应和塑性变形规律。结果表明,合金锻造变形率大于70%时可基本消除铸态组织;温度≥700℃、道次减薄率为20%～30%、进给比为0.5～1.0 mm·r~(-1)时,合金筒形件旋压变形稳定。同时,对TB2钛合金旋压件进行了热处理试验,研究了固溶温度、时效温度对合金组织性能的影响,确定了合金的固溶温度和时效温度分别为710和520℃。
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The microstructure and mechanical properties of TB2 titanium alloy forging-blank and its extruding-one after tube-spinning were investigated.The deformation-strengthen effect and plastic deformation mechanism of TB2 titanium alloy were also studied.The results show that TB2 titanium alloy cast-ingot can be converted into deformed-structure when forging-rate reaches to 70%.The alloy tubes can be spun smoothly under the condition in which spinning-tem- perature,reduction in thickness at every turn and feed rate are 700℃,20%～30%and 0.5～1.0 mm·r~(-1),respec- tively.The influences of solution temperature and aging temperature on the microstructure and mechanical properties of TB2 titanium alloy were researched with the aid of heat-treatment,and heat-treatment system was optimized and cho- sen,in which solution temperature and aging temperature are 710 and 520℃,respectively.
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作者简介：
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参考文献：
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[1]汪发春，赵云豪．薄壁壳体变薄旋压成形试验研究[J]．新技术新工艺，2005，(9)：37-38．
[2]汪发春．TB2钛合金热加工特性及热旋压组织性能研究[D]．北京：北京有色金属研究总院，2007．
[3]于顺兵．TB2钛合金高压气瓶加工工艺及组织性能的研究[D]．北京：北京有色金属研究总院，2005．
[4]吕成，张立文，牟正君，等．TC4钛合金锻件锻造过程三维热力耦合有限元模拟[J]．锻压技术，2007，32(1)：28-31．
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