Structure and properties of cast binary Ti-Mo alloys
Structure and properties of cast binary Ti-Mo alloys
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DOI：
10.1016/s0142-9612(99)00114-3
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发表时间：
1999-11-01
期刊：
影响因子：
14
通讯作者：
Lin, JHC
中科院分区：
文献类型：
--
作者：
Ho, WF;Ju, CP;Lin, JHC
研究了钼含量在6~20wt%范围内的一系列二元钛钼合金的组织和性能。实验结果表明，铸态合金的晶体结构和形貌对钼含量很敏感。六方α‘相C.P.钛具有羽毛状的形貌。当Mo含量为6wt%时，合金中观察到细小的针状正交α“相组织，当Mo含量为7.5wt%时，整个合金以马氏体α”相为主。当Mo含量增加到10wt%或更高时，残留的β相成为唯一的优势相。在所有的Ti-Mo合金中，α“相的Ti-7.5Mo合金的硬度最低，其抗弯强度与Ti-15Mo和Ti-13Nb-13Zr相当，比普通钛提高近60%，但比Ti-15Mo低22%，比Ti-6Al-4V低47%，比Ti-13Nb-13Zr低17%，比普通钛低17%。TI增加了40%。(C)1999爱思唯尔科学有限公司。保留所有权利。
Structure and properties of a series of binary Ti-Mo alloys with molybdenum contents ranging from 6 to 20 wt% have been investigated. Experimental results indicated that crystal structure and morphology of the cast alloys were sensitive to their molybdenum contents. The hexagonal alpha' phase c.p. Ti exhibited a feather-like morphology. When Mo content was 6 wt%, a fine, acicular martensitic structure of orthorhombic alpha" phase was observed. When Mo content was 7.5 wt%, the entire alloy was dominated by the martensitic alpha" structure. When Mo content was increased to 10 wt% or higher, the retained beta phase became the only dominant phase. Among all Ti-Mo alloys, the alpha" phase Ti-7.5Mo alloy had the lowest hardness. The bending strength of Ti-7.5Mo was similar to that of Ti-15Mo and Ti-13Nb-13Zr, and higher than c.p. Ti by nearly 60%. The bending modulus of the alpha"-dominated Ti-7.5Mo alloy was lower than that of Ti-15Mo by 22%, of Ti-6Al-4V by 47%, of Ti-13Nb-13Zr by 17%, and of c.p. Ti by 40%. (C) 1999 Elsevier Science Ltd. All rights reserved.