In an attempt to improve the weak-bonding interface of metallic matrixes and conventional ceramic reinforcing agents, a way to prepare Al-based composites reinforced by using Ti particles was explored. Firstly, Al and Ti powders with nominal mass ratio of 77:23 were mixed fully and heat-sintered under the condition of vacuum and some pressure. Then microstructural evolution of the resultant products during the sintering process was characterized. It shows that a kind of laminated reinforcements composed of intermetallic Al3Ti, TiAl and metallic Ti can be formed under appropriate sintering conditions, and the reinforcements have good bonding with Al matrix. The optimum sintering temperature for preparing such high-performance Al-based composites is from 600℃ to 630℃.
ZHANG Li, WU Bao-lin, CUI Xian-wei
. Research on evolution of TiP/Al composites prepared by hot-press sintered microstructure[J]. Journal of Shenyang Aerospace University, 2013
, 30(1)
: 76
-80
.
DOI: 10.3969/j.issn.2095-1248.2013.01.017
[1]Pe′rez P, Garce′s G, Adeva P.Mechanical properties of a Mg-10 (vol.%)Ti composite[J].Composites Science and Technology, 2004(64):145-146.
[2]Lu L, Lai M.O, Toh Y H, et al.Structure and properties of Mg-Al-Ti-B alloys synthesized via mechanical alloying[J].Mater Sci Eng, 2002(334):163-172.
[3]李小强, 胡连喜, 王尔德.Ti-Al二元粉末机械合金化过程中组织结构的变化[J].稀有金属材料与工程, 2001, 30(3):183-185.
[4]Liu Jiang-ping, Su Yan-qing, XuYan-jin, et al.First phase selection in solid Ti/Al diffusion couple[J].Rare metal materials and engineering, 2011, 40(5):0753-0756.
[5]陈小会, 揭小平, 闫洪, 等.搅拌反应合成Al-Ti金属间化合物强化铝基复合材料的工艺[J].塑性工程学报, 2011, 18(3):91-94.
[6]Munoz-Morris M A, Rexach J I, Lieblich M.Comparative study of Al-TiAl composites with different intermetallic volume fractions and particle sizes[J].Intermetallics, 2005(13):141-149.
[7]王衍行, 林均品, 贺跃辉, 等.元素粉末Ti与Al反应机理的研究进展[J].材料导报, 2007, 27(1):83-85.
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[8]V.Raghavan.Al-Ti (Aluminum-Titanium)[J].JPEDAV, 2005(26):171-172.
[9]张迪, 孙彦波, 赵业青, 等.SiC纤维增强Ti-Al金属间化合物基复合材料的界面反应[J].中国有色金属学报, 2010, 20(s1):1056-1057.
[10]Mordyuk B N, Silberschmidt V V, Prokopenko G I, et al.Ti particle-reinforced surface layers in Al:Effect of particle size on microstructure, hardness and wear[J].Materials characterization, 2010(61):1126-1134.
[11]WANG Xiao-ming, Animesh Jha, Rik Brydson.In situ fabrication of Al3Ti particle reinforced aluminium alloy metal-matrix composites[J].Materials Science and Engineering, 2004(364):339-345.
