熱處理制度對(duì)Ti-1300合金組織和力學(xué)性能的影響
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時(shí)間：2016-01-27
研究了Ti-1300鈦合金d160 mm棒材經(jīng)β相變點(diǎn)下固溶時(shí)效及β退火加時(shí)效熱處理的性能與組織演變。
熱處理制度對(duì)Ti-1300合金組織和力學(xué)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(jīng)β相變點(diǎn)下固溶時(shí)效及β退火加時(shí)效熱處理的性能與組織演變。結(jié)果表明：通過(guò)熱處理，Ti-1300合金在高的強(qiáng)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(dāng)采用β相變點(diǎn)下固溶時(shí)效處理時(shí)，可獲得如下力學(xué)性能：抗拉強(qiáng)度≥1 250 MPa，伸長(zhǎng)率≥8%。當(dāng)采用β退火隨爐緩慢冷卻加時(shí)效處理時(shí)，盡管強(qiáng)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(méi)有明顯的差別，通過(guò)調(diào)整熱處理參數(shù)，可獲得如下力學(xué)性能：抗拉強(qiáng)度≥1 100 MPa，伸長(zhǎng)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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