焊趾TIG重熔对钛合金T型接头疲劳性能影响

Development and Application of Materials(2017)

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Abstract
研究了焊趾TIG重熔对钛合金T型接头疲劳性能的影响,结果表明,经过焊趾TIG重熔和喷淋激冷处理后,焊趾部位残余应力可降低32%;在2×105疲劳次数循环基数下,焊趾重熔+喷淋激冷处理后接头疲劳强度可提高4倍;在260 MPa应力值水平下,焊趾重熔+喷淋激冷处理后,接头疲劳寿命提高3.3倍;焊趾重熔+喷淋激冷处理并进行超声波冲击消应力后,接头疲劳寿命提高9.9倍,疲劳性能明显优于采用两种方法单独进行处理时的接头疲劳性能.
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