的组织与性能
(1.西北工业大学材料科学与工程学院，西安 710072;
2.东北大学金属材料研究所， 仙台980， 日本)
摘要: 用快速凝固粉末冶金法制备完全致密的含Ti的Nb3Al-Nb固溶体两相合金，和铸锭法相比较， 所制合金的组织显著细化， 屈服强度显著提高。 通过Nb3Al与塑性相Nb固溶体的复合， 合金的低温脆性较Nb3Al明显减小。)
摘 要: 用快速凝固粉末冶金法制备完全致密的含Ti的Nb3Al-Nb固溶体两相合金，和铸锭法相比较， 所制合金的组织显著细化， 屈服强度显著提高。 通过Nb3Al与塑性相Nb固溶体的复合， 合金的低温脆性较Nb3Al明显减小。
关键字: 关键词: Nb3Al-Nb两相合金 快速凝固 粉末冶金 强度 塑性
（1.College of Materials Science and Engineering,Northwestern Polytechnical University, Xi'an 710072, P. R. China
2.Institute for Materials Research,Tohoku University, Sendai 980, Japan）
Abstract:Nb3Al-Nb solid solution two-phase alloy doped with Ti is fabricated by rapid solidification powder metallurgy technology. The results show that the dense material with no porosity is obtained, and compared with ordinary solidification process, the microstructure of the alloy fabricated by rapid solidification process is extremely fine and the yield strength is considerably increased. By means of the compositing with ductile phase, the low temperature brittleness of the alloy is evidently decreased.
Key words: Nb3Al-Nb two-phase alloy rapid solidification powder
metallurgy strength ductility
