熱處理制度對Ti-1300合金組織和力學性能的影響
發布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-01-27
研究了Ti-1300鈦合金d160 mm棒材經β相變點下固溶時效及β退火加時效熱處理的性能與組織演變。
熱處理制度對Ti-1300合金組織和力學性能的影響Influence of heat treatment on microstructure andmechanical properties of Ti-1300 alloy研究了Ti-1300鈦合金d160 mm棒材經β相變點下固溶時效及β退火加時效熱處理的性能與組織演變。結果表明：通過熱處理，Ti-1300合金在高的強度水平下具有良好的塑性及韌性，并且顯示出深淬透性的特征。當采用β相變點下固溶時效處理時，可獲得如下力學性能：抗拉強度≥1 250 MPa，伸長率≥8%。當采用β退火隨爐緩慢冷卻加時效處理時，盡管強度較低，但可獲得更高的韌性，并且棒材的橫向和縱向性能沒有明顯的差別，通過調整熱處理參數，可獲得如下力學性能：抗拉強度≥1 100 MPa，伸長率≥8%，斷裂韌性≥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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