摘要
针对异种组配连续驱动摩擦焊,通过引入热量分配系数得到了焊接稳态阶段粘塑性区平均温度的解析模型,利用此解析模型计算了TC4/TC17和TC11/TC17两种异种钛合金组配在恒定焊接转速、变轴向压力和恒定轴向压力、变焊接转速下的焊接稳态阶段粘塑性区平均温度,并将计算结果与用红外热成像仪记录的实际温度进行了对比。结果表明:当焊接转速一定时,平均温度随着轴向压力的增加而下降;当轴向压力一定时,平均温度随着焊接转速的增大而上升;当焊接参数一定时,异种组配TC17侧的稳态阶段粘塑性区平均温度均低于TC4或TC11侧。在实验所处范围内平均温度的计算值和实测值吻合良好,其偏差均不超过7%,表明本文提出的解析模型是可靠的。
For the dissimilar joint of continuous drive friction welding, an analytical solution was pro- posed to predict the steady-state average temperature in the plastic region, which was resorted to the distribution coefficient of welding heat. The steady-state average temperature in the plastic region of two dis- similar joint TC4/TC17 and TC11/TC17 were calculated in the following cases： constant rotation speed but different welding pressures and constant welding pressure but different rotation speeds. The calculated average temperature was compared with the experimental temperature data. The results show that when the rotational speed is holding constant, the average temperature decreased with the increasing welding pressures, while when the welding pressure is holding constant, the average temperature increased with the increasing rotational speeds. When the welding parameter is holding constant, the average temperature of the TC17 side of dissimilar joints are always lower than that of the other side, whether TC4/TC17 or TC11/TC17 joint. The calculated temperature and the actual temperature agree well and the difference between them is less than 7% which shows the accuracy of the analytical solution.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2013年第5期501-507,共7页
Chinese Journal of Materials Research
基金
国家自然科学基金(51071123
51101126)
凝固技术国家重点实验室(西北工业大学)自主研究课题(43–QP–2009
31–TP–2009)资助项目~~
