Microstructural Refinement of Boron Containing β-Solidifying γ-Titanium Aluminide Alloys
Microstructural Refinement of Boron Containing β-Solidifying γ-Titanium Aluminide Alloys
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DOI：
10.4028/www.scientific.net/msf.706-709.1089
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发表时间：
2012-01
期刊：
影响因子：
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通讯作者：
M. Oehring;A. Stark;J. Paul;T. Lippmann;F. Pyczak
中科院分区：
文献类型：
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作者：
M. Oehring;A. Stark;J. Paul;T. Lippmann;F. Pyczak
β凝固γ钛铝化物合金在铸造条件下表现出精细且均匀的微观结构，特别是当合金含有B作为晶粒细化剂时。文献[1]的工作表明，在此类合金中，B 引起的晶粒细化效应完全归因于其对固态 β/α 转变的影响。结果进一步表明，即使微观结构已通过先前的热处理大幅粗化，这些材料的晶粒细化也可以通过简单的热处理来实现。
β solidifying γ titanium aluminide alloys exhibit fine and homogeneous microstructures in the cast condition, in particular if the alloys contain B as a grain refining agent. Following work in the literature [1], it is demonstrated that the grain refining effect due to B is solely attributed in such alloys to its effect on the solid-state β/α transformation. The results further show that grain refinement in these materials can be obtained by a simple heat treatment, even if the microstructure has been extensively coarsened through prior heat-treatment.