利用Ti-Fe合金体系组元间具有负的混合焓而能发生放热反应的热力学特征,进行了激光诱导自蔓延反应Ti-Fe合金的工艺研究.结果表明,当反应体系的化学成分由亚共晶向过共晶成分转变时,合成产物依次是由β-Ti固溶体+(β-Ti+TiFe)共晶、(β-Ti+TiFe)共晶、TiFe金属间化合物+(β-Ti+TiFe)共晶组织所构成.由于受反应合成不完全性的影响,以及原始粉末颗粒所吸附氧的存在,致使不同成分合成产物中皆出现了以氧稳定的Ti2Fe相.共晶合成样品因其精细的共晶组织构成和高的致密性,使其具有优异的硬度、强度和韧度.
参考文献
[1] | A.Inoue .Stabilization of metallic supercooled liquid and bulk amorphous alloys[J].Acta materialia,2000(1):279-306. |
[2] | Lin X H;Johnson W L .Formation of Ti-Zr-Cu-Ni bulk metallic glasses[J].Journal of Applied Physics,1995,78(11):6514-6519. |
[3] | Zhang Tao;Akihisa Inoue;Tsuyoshi Masumoto .Amorphous (Ti,Zr,Hf)-Ni-Cu ternary alloys with a wide supercooled liquid region[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1994,181-182:1423-1426. |
[4] | Tao Zhang;Akihisa Inoue .Thermal and mechanical properties of Ti-Ni-Cu-Sn amorphous alloys with a wide supercooled liquid region before crystallization[J].Materials transactions,1998(10):1001-1006. |
[5] | G. He;J. Eckert;W. Loser .Composition dependence of the microstructure and the mechanical properties of nano/ultrafine-structured Ti-Cu-Ni-Sn-Nb alloys[J].Acta materialia,2004(10):3035-3046. |
[6] | Dmitri V. Louzguine;Hidemi Kato;Akihisa Inoue .High strength and ductile binary Ti-Fe composite alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):L1-L3. |
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