本文選題：AZ鎂合金　切入點(diǎn)：Sm　出處：《輕合金加工技術(shù)》2017年11期 　論文類型：期刊論文

【摘要】：以AZ31鎂合金為基礎(chǔ),通過加入稀土元素Sm(釤)進(jìn)行合金化,以獲得室溫和高溫力學(xué)性能優(yōu)良的耐熱鎂合金。采用光學(xué)顯微鏡、掃描電鏡、X射線衍射儀、電子拉伸試驗(yàn)機(jī)等多種分析和測(cè)試手段,較為系統(tǒng)地研究了稀土元素Sm對(duì)AZ31鎂合金顯微組織及室溫和高溫力學(xué)性能的影響。結(jié)果表明,適量的稀土元素Sm的加入能夠改善AZ31鎂合金的顯微組織,提高其力學(xué)性能。隨著釤含量的增加,合金的強(qiáng)度和伸長(zhǎng)率先升高后降低,且當(dāng)w(Sm)=1.5%時(shí),不論是在室溫(20℃)還是在高溫(150℃、175℃),合金的抗拉強(qiáng)度和伸長(zhǎng)率取得最大值。在稀土元素Sm的加入量一定時(shí),合金的抗拉強(qiáng)度隨溫度的升高而降低。
[Abstract]:Based on AZ31 magnesium alloy, the heat resistant magnesium alloy with excellent mechanical properties at room temperature and high temperature was obtained by adding rare earth element Smm (samarium). The effect of rare earth element Sm on the microstructure and mechanical properties of AZ31 magnesium alloy at room and high temperature was systematically studied by means of electronic tensile testing machine and so on. The addition of appropriate amount of rare earth element Sm can improve the microstructure and mechanical properties of AZ31 magnesium alloy. With the increase of samarium content, the strength and elongation of AZ31 magnesium alloy increase first and then decrease, and when the content of Sm is 1.5, Both at room temperature (20 鈩，

本文編號(hào)：1620126