固溶态TC6钛合金微观组织与冲击性能的研究  

Study on microstructure and impact properties of solid solution TC6 titanium alloy

作　　者：陈雅娟 张明玉 Chen Yajuan;Zhang Mingyu(Xinjiang Xiangrun New Materials Technology Co.,Ltd.,Hami 839000,Xinjiang,China)

机构地区：[1]新疆湘润新材料科技有限公司,新疆哈密839000

出　　处：《特钢技术》2024年第4期22-25,共4页Special Steel Technology

基　　金：自治区重点研发计划项目(2022B01029);新疆钛基新材重点实验室(XJQY2009)。

摘　　要：本文以TC6钛合金作为试验材料,设置不同的温度,对该合金进行固溶处理,对固溶态TC6钛合金微观组织与冲击性能进行研究,研究发现:合金的微观组织形态会受到固溶温度变化的影响,提高固溶温度有助于初生α相的溶解和合金的均匀化,当合金经单相区温度固溶处理后,初生α相完全消失,取而代之的是较多的细小针状α相的析出。发现固溶温度升高,合金冲击性能随之不断降低。合金经较低温度固溶处理后,冲击断口的微观形貌以大量韧窝为主。当固溶温度升高后,可以观察到断口中的韧窝数量减少,并开始出现了一定数量的撕裂棱,且冲击断口形貌主要表现为岩石状,仅有少量的细小尺寸韧窝分布在断口表面。Using TC6 titanium alloy as the experimental material,different temperatures were set to perform solid solution treatment on the alloy.The microstructure and impact properties of the solid solution TC6 titanium alloy were studied.The results showed that the microstructure and morphology of the alloy were affected by changes in the solid solution temperature.Increasing the solid solution temperature helped dissolve the primary alpha phase and homogenize the alloy.When the alloy was subjected to single-phase temperature solid solution treatment,the primary alpha phase completely disappeared and was replaced by the precipitation of more small needle-like alpha phases.As the solid solution temperature increases,the impact performance of the alloy continuously decreases.After solution treatment at lower temperatures,the microstructure of the impact fracture surface of the alloy is mainly characterized by a large number of dimples.When the solid solution temperature increases,it can be observed that the number of dimples in the fracture surface decreases,and a certain number of tearing ridges begin to appear.The impact fracture morphology is mainly rock-like,with only a small number of small-sized dimples distributed on the fracture surface.

关 键 词：TC6钛合金 微观组织 冲击性能 断口微观形貌 

分 类 号：TG156.1[金属学及工艺—热处理]