本文選題：熱處理　切入點(diǎn)：AZ鎂合金　出處：《東北大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年11期

【摘要】：通過常溫下的銷盤式干滑動(dòng)摩擦磨損試驗(yàn),研究固溶及不同時(shí)間的時(shí)效處理對(duì)鑄態(tài)AZ61鎂合金摩擦磨損性能的影響.試驗(yàn)載荷為100 N,滑動(dòng)速度為0.78 m/s,滑動(dòng)距離為1 km.結(jié)果表明:固溶處理使鑄態(tài)合金中的粗大β-Mg17Al12相溶解,導(dǎo)致合金的硬度降低,摩擦系數(shù)和磨損率升高;在170℃下對(duì)AZ61合金進(jìn)行不同時(shí)間(0~80 h)的時(shí)效處理使尺寸細(xì)小的β相在晶內(nèi)和晶界處析出,提高了合金的耐磨性,其中時(shí)效20 h后合金的摩擦系數(shù)和磨損率最低.AZ61合金在摩擦磨損的過程中共存在三種磨損機(jī)制:磨粒磨損、氧化磨損及剝層磨損.
[Abstract]:Through the dry sliding friction and wear test at room temperature, The effects of solid solution and aging treatment at different time on the friction and wear properties of as-cast AZ61 magnesium alloy were studied. The test load is 100N, the sliding speed is 0.78 m / s, and the sliding distance is 1 km 路s. The results show that the coarse 尾 -Mg17Al12 phase in the as-cast alloy can be dissolved by solid solution treatment. The hardness of the alloy decreased, the friction coefficient and wear rate increased, and the aging treatment of AZ61 alloy at 170 鈩，

本文編號(hào)：1669004