(重慶大學(xué) 國(guó)家鎂合金工程技術(shù)研究中心，重慶 400030)
摘 要: 鍶作為一種應(yīng)用潛力較大的鎂合金合金化元素，已在鎂合金中的應(yīng)用研究領(lǐng)域引起國(guó)內(nèi)外的廣泛關(guān)注和高度重視。國(guó)內(nèi)外近幾年來(lái)的研究工作主要集中在鍶對(duì)鎂合金晶粒細(xì)化、第二相改性和含鍶耐熱鎂合金的發(fā)展等方面。對(duì)國(guó)內(nèi)外含鍶鎂合金研究工作的最新進(jìn)展進(jìn)行綜述，介紹重慶大學(xué)近幾年在含鍶鎂合金方面的最新研究成果，討論若干新型含鍶鎂合金的組織和性能，分析含鍶鎂合金發(fā)展和生產(chǎn)應(yīng)用中存在的問(wèn)題和今后的研究方向。
關(guān)鍵字: 鎂合金；Sr；Sr中間合金；含Sr新型鎂合金；組織；性能
（National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400030, China）
Abstract:Sr is a very potential alloying and/or micro-alloying element for magnesium alloys. The investigations about the effects of Sr addition on the microstructure and properties of magnesium alloys and the development of new type Sr-containing magnesium alloys have attracted an increasing interest. Recently, the work was focused on the grain refinement and the improvement of second phases in magnesium alloys by addition of strontium. The latest research status about the effects of Sr addition on the microstructure of magnesium alloys and the development of new type magnesium alloys containing Sr were reviewed, and the existing problems were discussed. The research work shows that the microstructure and composition of the master alloys containing Sr have obvious influence on the grain refinement of magnesium alloys caused by addition of strontium.
Key words: magnesium alloys; Sr; Sr master alloys; new type Sr-containing magnesium alloys; microstructure; mechanical properties
