时效成形工艺参数对搅拌摩擦焊对接2198铝锂合金回弹的影响  

Effect of processing parameter on springback during creep age forming of Al-Li alloy 2198 butt-joined by FSW

作　　者：李红[1] 白雪飘[1] 曾元松[1] 孟强[1] 

机构地区：[1]北京航空制造工程研究所,北京100024

出　　处：《塑性工程学报》2013年第6期108-111,共4页Journal of Plasticity Engineering

摘　　要：针对2198铝锂合金搅拌摩擦焊对接蒙皮开展时效成形工艺试验,研究时效时间、时效温度、弹性预弯量等工艺参数对回弹规律的影响。结果表明,回弹率随时效时间增加而降低,随时效温度升高而下降,随预弯半径增大而增加。并通过正交多项式回归分析,建立了时效成形工艺参数与回弹的函数关系。The creep age forming experiments for Al-Li alloy 2198 were conducted and the effects of the aging time, aging temperature and initial elastic deformation on the curvature radius were investigated. The results show that the springback is decrea sing with the increasing of aging time and aging temperature. The springback is increasing when applied to larger initial elastic deformation. A regression equation of the three factors and springback was established according to the orthogonal polynomial regression analysis.

关 键 词：2198铝锂合金 搅拌摩擦焊 时效成形 回弹 

分 类 号：TG306[金属学及工艺—金属压力加工]