TA17钛合金热力学行为及加工特性研究
发布时间:2018-08-03 17:17
【摘要】:为了研究TA17钛合金热轧条件下的高温变形行为及热加工特性,在热模拟机上开展变形温度为700~1100℃、应变速率为1~40 s~(-1)条件下的热压缩实验,建立基于Arrhenius模型的本构方程,以及应变分别为0.3和0.6时的热加工图,结合热变形显微组织分析,研究该合金的热塑性变形机制。结果表明:TA17钛合金流变应力随着变形温度的升高而降低,随着应变速率的升高而升高。在温度为800~1000℃、应变速率为1~10 s~(-1)时,材料的变形机制主要为动态再结晶;温度为1000~1100℃、应变速率为1~10 s~(-1)时,材料发生动态回复;温度为700~800℃或1000~1100℃、应变速率大于20 s~(-1)时,材料产生绝热剪切带;温度为700~800℃,应变速率为1~5 s~(-1)时,材料易产生裂纹。得出该合金较优的热轧工艺参数为:变形温度800~1000℃,应变速率1~10 s~(-1)。
[Abstract]:In order to study the high temperature deformation behavior and hot working characteristics of TA17 titanium alloy under hot rolling conditions, a thermal compression experiment was carried out on a thermal simulator with a deformation temperature of 700 鈩,
本文编号:2162432
[Abstract]:In order to study the high temperature deformation behavior and hot working characteristics of TA17 titanium alloy under hot rolling conditions, a thermal compression experiment was carried out on a thermal simulator with a deformation temperature of 700 鈩,
本文编号:2162432
本文链接:https://www.wllwen.com/kejilunwen/jiagonggongyi/2162432.html