热处理制度对Ti-1300合金组织和力学性能的影响
发布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新时间：2016-01-27
研究了Ti-1300钛合金d160 mm棒材经β相变点下固溶时效及β退火加时效热处理的性能与组织演变。
热处理制度对Ti-1300合金组织和力学性能的影响Influence of heat treatment on microstructure andmechanical properties of Ti-1300 alloy研究了Ti-1300钛合金d160 mm棒材经β相变点下固溶时效及β退火加时效热处理的性能与组织演变。结果表明：通过热处理，Ti-1300合金在高的强度水平下具有良好的塑性及韧性，并且显示出深淬透性的特征。当采用β相变点下固溶时效处理时，可获得如下力学性能：抗拉强度≥1 250 MPa，伸长率≥8%。当采用β退火随炉缓慢冷却加时效处理时，尽管强度较低，但可获得更高的韧性，并且棒材的横向和纵向性能没有明显的差别，通过调整热处理参数，可获得如下力学性能：抗拉强度≥1 100 MPa，伸长率≥8%，断裂韧性≥70 MPa∙m1/2。
The mechanical properties and microstructures of Ti-1300 titanium alloy rod with diameter of 160 mm after solution plus aging treatment and β annealing plus aging treatment were investigated. The results show that good ductility and toughness could be achieved for Ti-1300 rod at high strength level after heat treatment. The alloy also presents deep quenching characteristics. After solution plus aging treatment, such mechanical properties (ultimate tensile strength no less than 1 250 MPa, elongation no less than 8%) could be achieved. After β annealing plus aging treatment, the strength is relatively low; however, the toughness is improved and there is no obvious difference of properties between longitudinal and transverse directions. By adjusting the parameters of heat treatment, the ultimate tensile strength, elongation and fracture toughness no less than 1 100 MPa, 8% and 70 MPa·m1/2, respectively, could be achieved.
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