淬火介质因素对7075铝合金厚板残余应力的影响  

Effect of Quenching Medium Factor on Residual Stress of 7075 Aluminum Alloy Plate

作　　者：陈梦雄[1] 钟华萍[2] 梁轩[3] 张辉[1] 

机构地区：[1]九江市建设工程质量检测中心,江西九江332000 [2]南方冶金学院材料与化学工程分院,江西赣州341000 [3]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《铝加工》2003年第5期1-4,15,共5页Aluminium Fabrication

基　　金：国家重点基础研究发展规划(973)项目资助(G1999064908)

摘　　要：就淬火介质因素(不同介质浓度、温度)对7075铝合金厚板残余应力的影响进行研究。结果表明:淬火残余应力随着介质浓度和温度增加而减少。即在浓度30％、温度40℃的AQ251聚合物和乳液介质中淬火,与同温度下水淬相比,残余应力分别降低64.2％和83.5％,而板材显微硬度只降低5％和7％。The influence of quenching medium factors (various medium concentration, temperature) on residual stress of 7005 aluminum alloy plate is investigated in the paper. It is shown that residual stresses reduce with increasing medium concentration, ie, residual stresses reduce by 64.2% and 83.5% respectively after quenching in AQ251 emulsion medium with concentration 30% and 40℃, but micro-hardness reduced by only 5%and 7% respectively comparing with water quenching under the some temperature.

关 键 词：铝合金 残余应力 淬火介质 冷却曲线 厚板 显微硬度 

分 类 号：TG156.3[金属学及工艺—热处理]