金属学报  1996, Vol. 32 Issue (11): 1171-1176

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Ti-Al-Si三元系中叶α(α_2)/γ相平衡的研究

李俊涛;郝士明

东北大学;东北大学材料系金属学教研室

^^α(α_2)/ PHASE EQUILIBRIA IN Ti-Al-Si SYSTEM

LI Juntao; HAO Shiming (Northeastern University; Shenyang 110006)

李俊涛;郝士明. Ti-Al-Si三元系中叶α(α_2)/γ相平衡的研究[J]. 金属学报, 1996, 32(11): 1171-1176.
, . ^^α(α_2)/ PHASE EQUILIBRIA IN Ti-Al-Si SYSTEM[J]. Acta Metall Sin, 1996, 32(11): 1171-1176.

摘要 参考文献 相关文章 Metrics 全文: PDF(438 KB)   摘要: 利用电子探针微区成分分析测定了Ｔｉ－Ａｌ－Ｓｉ系低Ｓｉ部分的α（α２）／γ相平衡关系，并进行了热力学分析．结果表明，相对于Ｔｉ－Ａｌ二元系，Ｓｉ的加入使α（α２）／（α（α２）＋γ）相界线向富Ｔｉ方向移动，而（α（α２）＋γ）／γ相界线变化不大；Ｓｉ具有细化片层组织的作用，井使其粗化困难；Ｓｉ在α（α２）相中的溶解度大于γ相，为α相稳定化元素；Ｓｉ含量为１．０％（原子分数）时，组织中出现第三相Ｔｉ５Ｓｉ３． 关键词 ： Ｔｉ－Ａｌ－Ｓｉ系,  垂直截面相图,  α（α_２）／γ相平衡     Abstract：The partial α(α2)/γ phase equilibria in Ti-Al-Si ternary system at low Si concentration were measured by EPMA and examined with thermodynamic analysis. The results show that the addition of Si in Ti-Al binary system results in the α(α2)/ (α(α2)+γ) phase boundary shifting to Ti-rich side, whereas the (α(α2)+γ/γ) phase boundary shifting little. Si has effect on refining lamellar microstructure and makes the lamellae coarsen difficultly. The Si solubility in α(α2) phase is higher than that in γ phase thereas Si is an αphase-forming element in Ti-Al binary system. A third phase Ti5Si3 appears in the system with Si addition up to 1 .0% (atomic fraction). Correspondent: LI Juntao, Department of Materials Science and Engineering, Northeastern University.Shenyang 110006 Key words： Ti-Al-Si ternary system    partial vertical section    α(α_2) / γ phase equilibrium 收稿日期: 1996-11-18      基金资助:国家自然科学基金 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 李俊涛 郝士明 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1996/V32/I11/1171 1KimYW．ActaMetallMater,1992;40:11212KimYW．JOM,1994;46(7):303TsuyamaS,MitaoS,MinakawaK．MaterSciEng,1992;A153:4514加藤哲男,草加藤司．粉体粉末冶金,1989;36(7):305DimidukDM,MiracleDB,KimYW,MendirattaMG．ISIJInt,1991;31:12236RamanujanRV．ActaMetallMater,1994;42:23137郝士明,韩传玺,吴文涛．金属学报,1993;29:A498秦高梧,郝士明．东北大学学报,1996;17:266v [1] 秦高梧;郝士明;曾宁华. Ti-Al-Ga系及Ti-Al-Nb-Cr系α(α_2)/γ相平衡的研究[J]. 金属学报, 1995, 31(23): 484-488. Viewed Full text Abstract Cited   Shared      Discussed