所属单位：材料科学工程学院

发表刊物：Conferences of International Conference on Computer Science and Engineering Technology

项目来源：国家自然科学基金项目

关键字：TiH2; Al; Sn; powder; mechanical alloying

摘要：Mechanical alloying (MA) as a powder metallurgy method is often used to prepare materials with ultrafine grain and special structure difficultly obtained in conventional ways. In this paper, the TiH(2)45Al4Sn (at. %) composite powder was mechanically milled by high energy ball milling. The crystalline grain size, morphology and phase characteristic of milled powder with different milling time were investigated by XRD, SEM and TEM. The results show that with the milling time increasing, the powder particles are refined rapidly in the initial stage and then gradually become stable. The new phase Ti2Sn3 is formed by mechanical alloying (MA) of TiH2, Al, Sn powders during milling which resulted particles refinement to very small size. The homogeneous and dense Ti2Al and Ti2Sn3 intermetallic compounds are obtained after vacuum hot pressing sintering, which microstructure is composed of equal axial Ti2Al as matrix and fine Ti2Sn3 particles. Because of the addition of Sn, Ti-Al intermetallic compounds formation is inhibited during MA and sintering. However, Sn contributes to the formation of Ti2Al phase which which is difficult to be obtained with the conventional method of casting and forging.

合写作者：周慧敏,邹阳,陈华

第一作者：陈华

论文类型：论文集

页面范围：2

字数：1

是否译文：否

发表时间：2016-01-10