刘占起,马瑞鑫,王文博,徐国建,苏允海.基板材料对激光熔化沉积制造Ti-48Al-2Cr-2Nb合金组织、织构、相和显微硬度的影响[J].稀有金属材料与工程,2020,49(7):2262~2268.[Liu Zhanqi,Ma Ruixin,Wang Wenbo,Xu Guojian,Su Yunhai.Effect of substrate material on the microstructure, texture, phase and microhardness of a Ti-48Al-2Cr-2Nb alloy processed by laser melting deposition[J].Rare Metal Materials and Engineering,2020,49(7):2262~2268.]
基板材料对激光熔化沉积制造Ti-48Al-2Cr-2Nb合金组织、织构、相和显微硬度的影响
投稿时间:2019-04-01  修订日期:2019-05-14
中文关键词:  激光熔化沉积  TiAl合金  显微组织    显微硬度
基金项目:智能化增材制造系统平台 (2017YFB1103600)
中文摘要:
      本文研究了基体材料对激光熔化沉积Ti-48Al-2Cr-2Nb合金显微组织、织构、相组成和硬度的影响。随着沉积层数的增加,沉积层的显微组织由网篮状结构向等轴状结构转变,最终演变为层状结构。α2(Ti3Al)相逐渐减少,γ(TiAl)相逐渐增多。不同的TiAl合金层具有不同的显微硬度。随着沉积层数的增加,显微硬度降低。研究结果对于激光沉积制造TiAl合金制备具有可接受的组织、织构、相组成和显微硬度具有参考价值。
Effect of substrate material on the microstructure, texture, phase and microhardness of a Ti-48Al-2Cr-2Nb alloy processed by laser melting deposition
英文关键词:laser metal deposition  TiAl alloy  microstructure  phase  microhardness
英文摘要:
      Effect of substrate material on the microstructure, texture, phase and hardness of a Ti-48Al-2Cr-2Nb alloy processed by laser melting deposition (LMD) was investigated. With the increase of the number of deposited layers, the microstructure of the deposited layers changes from basket structure to equiaxed structure and finally evolves into lamellar structure, and α2 (Ti3Al) phase decreases and γ (TiAl) phase increases gradually. Different TiAl alloy layers show different microhardness. With the increase of the number of deposited layers, the microhardness decreases. The findings would be a valuable reference for fabricating TiAl components with acceptable microstructure, texture, phase compositions and microhardness by LMD.
作者单位E-mail
刘占起 沈阳工业大学材料科学与工程学院 1640754283@qq.com 
马瑞鑫 沈阳工业大学材料科学与工程学院  
王文博 沈阳工业大学材料科学与工程学院  
徐国建 沈阳工业大学材料科学与工程学院  
苏允海 沈阳工业大学材料科学与工程学院  
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