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置氫TC4鈦合金室溫變形行為研究
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Investigations on Room Temperature Deformation Behaviors of Hydrogenated TC4 Alloys
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    摘要:

    通過壓縮試驗研究了置氫TC4合金的室溫變形行為，采用OM、TEM、XRD等分析手段研究了氫處理對TC4鈦合金室溫組織和變形機制的影響。結果表明，氫作為β相穩(wěn)定化元素，改善了TC4鈦合金淬火的亞穩(wěn)相結構，促進了斜方α″馬氏體和體心β相的生成。氫含量0.45%（質量分數(shù)，下同）時，合金中以α″相為主，變形方式為孿晶變形，變形能力提高幅度較??；氫含量超過0.59%時，合金中保留了大量β相，變形方式以滑移為主，變形極限大大提高。

    Abstract:

    The room temperature deformation behavior of hydrogenated TC4 alloys was studied through compression tests. The hydrogen treatment on the microstructure and deformation mechanism of the TC4 alloy at room temperature was studied by OM, TEM and XRD. Results show that hydrogen, as β stabilized element, modified the metastable phase composition of as-quenched alloys, promoted the generation of orthorhombic martensite α″ and body-centered β phase. When the H content was 0.45% (mass fraction, similarly hereinafter), the alloy mainly consisted of α″ phase, and the deformation behavior was twinning, which improved the deformation limit in a small range; while when the H content was higher than 0.59%, there were much β phase, and the deformation behavior was slipping, which improved the deformation limit greatly.

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孫中剛,王耀奇,李 紅,李曉華,侯紅亮,周文龍.置氫TC4鈦合金室溫變形行為研究[J].稀有金屬材料與工程,2009,38(10):1749~1751.[Sun Zhonggang, Wang Yaoqi, Li Hong, Li Xiaohua, Hou Hongliang, Zhou Wenlong. Investigations on Room Temperature Deformation Behaviors of Hydrogenated TC4 Alloys[J]. Rare Metal Materials and Engineering,2009,38(10):1749~1751.]
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  • 收稿日期:2008-09-10
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