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置氫TC16鈦合金室溫變形行為
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Room Temperature Deformation Behavior of Hydrogenated TC16 Titanium Alloy
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    摘要:

    應用準靜態(tài)、動態(tài)壓縮等試驗研究TC16鈦合金的室溫變形行為；利用OM、XRD等手段分析置氫后合金的顯微組織和相演變。結果表明：氫降低了合金的相變點，促進了亞穩(wěn)β相的生成。靜態(tài)壓縮時，隨著變形速度和氫含量的增加，合金的變形極限先降低后增加。氫含量為0.6%(質量分數)、變形速度為100 mm/min時，合金變形能力已經達到甚至超過原始合金，流變應力較原始下降200 MPa。動態(tài)變形時，材料發(fā)生明顯動態(tài)軟化，流變應力表現出高溫變形特征。

    Abstract:

    Room temperature deformation behavior of the hydrogenated TC16 alloys was investigated by quasistatic compression and dynamic compression tests. Microstructure evolution and phase compositions of the hydrogenated TC16 alloys were analyzed by OM, XRD, etc. The results show that the addition of hydrogen decreases the phase transition temperature and promotes the formation of the metastable β phase. In static tests, the deformation limit decreases at first and then increases with the increase of the hydrogen concentration and the deformation rate. For the specimens containing 0.6wt% H deformed at 100 mm/min, the deformation limit reaches or even exceeds that of the initial alloy and the flow stress is decreased by about 200 MPa. In dynamic compression tests, clear dynamic softening occurs and the flow stress exhibits the character of the high temperature deformation.

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孫中剛,陳國清,周文龍,王耀奇,侯紅亮,李志強.置氫TC16鈦合金室溫變形行為[J].稀有金屬材料與工程,2011,40(2):357~361.[Sun Zhonggang, Chen Guoqing, Zhou Wenlong, Wang Yaoqi, Hou Hongliang, Li Zhiqiang. Room Temperature Deformation Behavior of Hydrogenated TC16 Titanium Alloy[J]. Rare Metal Materials and Engineering,2011,40(2):357~361.]
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  • 收稿日期:2010-03-06
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