【摘要】 着重研究了退火、固溶处理、双级时效以及回归热处理4种不同的热处理工艺对7475铝合金试样在ECAP变形过程中晶粒细化的影响。退火处理后的试样在不同温度和道次挤压下呈现不同的微观组织形貌,高温下退火态铝合金试样ECAP挤压后晶粒明显细化。更多还原

【Abstract】 The research is focused on the heat treatment techniques of four different ways including anneal、deformation、dual aging、RRA to the deformation process and the fining process of alloy grains.The anneal alloy has different characters under different temperature.At the high temperature,the grains of the alloy are refined after ECAP process.更多还原