Ti6242S钛合金盘形锻件锻造及热处理工艺研究

采用260 mm钛合金棒材,以锤锻和压机锻造的方式试制了Ti6242S饼坯和盘形锻件,研究了锻造及热处理工艺对显微组织、力学性能以及超声检测杂波水平的影响。结果表明:压机锻出的饼坯组织和性能更优;随着固溶温度的升高,锻件初生α相减少,杂波降低;经制坯、压机锻造、热处理,锻件可获得较优的组织和性能。

Research on Forging and Heat Treatment Process of Ti6242S Titanium Alloy Disc Forgings

By using?260 mm titanium alloy bar, Ti6242S billet and disc forgings have been trial-manufactured by hammering machine and press.The influence of forging and heat treatment process on microstructure, mechanical property and clutter of ultrasonic testing has been studied as well.The results show that the microstructure and the mechanical property of billet forged by press is better;the primaryαphase of forging has decreased and the clutter has reduced along with the rising of solid solution temperature; a superior microstructure and mechanical property can be obtained by means of blank forming, press forging and heat treatment process.