TC17线性摩擦焊界面温度分析与测量  

Analysis and measurement of interface temperature of TC17 linear friction welding

作　　者：杜随更[1] 陈虎 胡弘毅[1] 李菊 Du Suigeng;Chen Hu;Hu Hongyi;Li Ju(Key Laboratory of High Performance Manufacturing for Aero Engine,Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi’an 710072,China;Institute of Electronic Engineering,Chinese Academy of Engineering Physics,Mianyang 621999,Sichuan China;Aeronautical Key Laboratory for Welding and Joining Technologies,AVIC Manufacturing Technology Institute,Beijing 100024,China)

机构地区：[1]西北工业大学,航空发动机高性能制造工业和信息化部重点实验室,西安710072 [2]中国工程物理研究院电子工程研究所,四川绵阳621999 [3]中国航空制造技术研究院,航空焊接与连接技术航空科技重点实验室,北京100024

出　　处：《焊接》2023年第8期1-5,共5页Welding & Joining

基　　金：国家自然科学基金资助项目(10477017);国家科技重大专项(2017-Ⅶ-0005-0098)。

摘　　要：焊接过程中的界面温度是研究接头组织形成变化机理的关键参量。根据线性摩擦焊接过程准稳定摩擦阶段焊件中(不包括飞边)准稳定温度场基本保持不变,所产生的热量主要被飞边带走的特点,通过理论分析,求解出了线性摩擦焊接过程准稳定摩擦阶段焊接界面的平均温度,利用半自然热电偶实际测量了TC17钛合金线性摩擦焊接时的焊接界面不同位置的温度变化。结果表明,典型参数下TC17准稳定摩擦阶段焊接界面的实测温度大约为1228℃,焊后冷却至500℃的速度约52℃/s,准稳定摩擦阶段焊接界面中心点和边缘点的温度相差不超过10℃,界面中心点的升温速率以及降温速率均高于边缘点,测量值与理论计算值相差不超过10%。The welding temperature during the linear friction welding is the key parameter to study the formation and change mechanism of joint microstructure.According to the characteristics that the temperature field of weldment(excluding flash)remains basically unchanged in the quasi stable friction stage of linear friction welding process,and the heat generated is mainly taken away by flash.The average temperature of welding interface of titanium alloy TC17 in quasi stable friction stage during friction welding is solved through theoretical analysis.The temperature changes at different positions of the welding interface during linear friction welding of TC17 titanium alloy were measured by semi natural thermocouple.The results show that the measured temperature of the welding interface at the quasi stable friction stage of TC17 under typical parameters is about 1228℃,and the cooling speed to 500℃after welding is about 52℃/s.In the quasi stable friction stage,the temperature difference between the center point and the edge point of the welding interface is no more than 10℃,and the heating rate and cooling rate of the center point of the interface are higher than those of the edge point.The difference between the measured value and the theoretical calculated value is not more than 10%.

关 键 词：线性摩擦焊 半自然热电偶 界面温度 

分 类 号：TG453.9[金属学及工艺—焊接]