锻造温度对Al-7Si-2.5Cu-0.3Mg铝合金活塞性能的影响  

Effect of Forging Temperature on Performance of Al-7Si-2.5Cu-0.3Mg Aluminum Alloy Pistons

作　　者：杨峰[1] 方雅[1] 杨一 YANG Feng;FANG Ya;YANG Yi(Henan Polytechnic Institute,Nanyang 473000,China;School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]河南工业职业技术学院,河南南阳473000 [2]河南理工大学材料科学与工程学院,河南焦作454003

出　　处：《热加工工艺》2021年第21期94-97,共4页Hot Working Technology

基　　金：河南省自然科学基金项目(2017GZC163)。

摘　　要：采用不同的始锻温度和终锻温度进行了Al-7Si-2.5Cu-0.3Mg铝合金活塞的锻造,并进行了高温磨损性能和抗高温氧化性能的测试与分析。结果表明:随始锻温度从445℃提高至505℃、终锻温度从335℃提高至395℃,试样的磨损体积和单位面积质量增加均先减小后增大,高温磨损性能和抗高温氧化性能均先提升后下降。475℃始锻和380℃终锻锻造试样的磨损体积和单位面积质量增加最小。Al-7Si-2.5Cu-0.3Mg铝合金活塞试样的锻造工艺参数优选为:475℃始锻温度、380℃终锻温度。The forging of Al-7Si-2.5Cu-0.3Mg aluminum alloy piston was carried out by using different initial forging temperatures and final forging temperatures.The high temperature wear property and high temperature oxidation resistance were tested and analyzed.The results show that with the increase of the initial forging temperature from 445℃to 505℃and the final forging temperature from 335℃to 395℃,the wear volume and mass increase per unit area of the sample decrease first and then increase,and the wear property and oxidation resistance at high temperature increase first and then decrease.The wear volume and mass increase per unit area of the sample forged at initial forging temperature of 475℃and final forging temperature of 380℃are the smallest.The optimized forging process parameters of Al-7Si-2.5Cu-0.3Mg aluminum mechanical piston specimen are initial forging temperature of 475℃and final forging temperature of 380℃.

关 键 词：Al-7Si-2.5Cu-0.3Mg铝合金 活塞 锻造温度 高温磨损性能 抗高温氧化性能 

分 类 号：TG319[金属学及工艺—金属压力加工] TG146.21[一般工业技术—材料科学与工程]