的組織與性能
(1.西北工業(yè)大學(xué)材料科學(xué)與工程學(xué)院，西安 710072;
2.東北大學(xué)金屬材料研究所， 仙臺(tái)980， 日本)
摘要: 用快速凝固粉末冶金法制備完全致密的含Ti的Nb3Al-Nb固溶體兩相合金，和鑄錠法相比較， 所制合金的組織顯著細(xì)化， 屈服強(qiáng)度顯著提高。 通過Nb3Al與塑性相Nb固溶體的復(fù)合， 合金的低溫脆性較Nb3Al明顯減小。)
摘 要: 用快速凝固粉末冶金法制備完全致密的含Ti的Nb3Al-Nb固溶體兩相合金，和鑄錠法相比較， 所制合金的組織顯著細(xì)化， 屈服強(qiáng)度顯著提高。 通過Nb3Al與塑性相Nb固溶體的復(fù)合， 合金的低溫脆性較Nb3Al明顯減小。
關(guān)鍵字: 關(guān)鍵詞: Nb3Al-Nb兩相合金 快速凝固 粉末冶金 強(qiáng)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
