典型文献
Seynergistic effect of Mo and Zr additions on microstructure and mechanical properties of Nb-Ti-Si-based alloys additively manufactured by laser directed energy deposition
文献摘要：
The synergistic effect of Mo and Zr additions on microstructure evolution,room-temperature fracture toughness and microhardness of Nb-22Ti-15Si-xMo-yZr(x=4,8,y=3,6)alloys manufactured by laser directed energy deposited(L-DED)have been investigated.The major phases in as-deposited 4Mo-3Zr alloy are Nb solid solution(Nbss),Nb3Si and y-Nb5Si3.The Nb3Si phases disappear with increasing Mo content to 8 at.％or increasing Zr content to 6％.γ-Nb5Si3 precipitates formed in the Nbss of as-deposited xMo-yZr alloys due to the cyclic re-heating,and the γ-Nb5Si3 precipitates and Nbss matrix exhibits ori-entation relationship(OR)of[001]Nbss//[1112]γ and(110)Nbss//(01(1)0)γ in as-deposited 4Mo-6Zr alloy.The microstructure of xMo-yZr alloys became relative homogeneity and the Nbss matrix showed the better continuity after the heat treatment(1400℃/30 h).The Nb3Si phase has transformed into Nbss and α-Nb5Si3 with the OR have been determined as{100}Nbss//{100}α and{111}Nbss//{111}α in the heat-treated 4Mo-3Zr alloy.When Mo content increase to 8at.％,a part of γ-Nb5Si3 phase also transformed into theα-Nb5Si3 phase with the OR have been determined as{11(2)0}y//{110}α and{10(1)0}y//{111}α after heat treatment.Among the as-deposited alloys,the 4Mo-6Zr alloy has the highest fracture toughness KQ with the lowest hardness.The average KQ of 4Mo-6Zr and 8Mo-6Zr alloys increased by 28％and 30％after the heat treatment,and reached 13.61 and 11.43 MPa·m1/2,respectively.The hardness of Nb-22Ti-15Si-xMo-yZr alloys is significantly decreased after the heat treatment.
文献关键词：
中图分类号：
作者姓名：
Yunlong Li;Xin Lin;Yunlong Hu;Jun Yu;Junguo Zhao;Hongbiao Dong;Weidong Huang
作者机构：
State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design,MIIT China,Northwestern Polytechnical University,Xi'an 710072,China;School of Engineering,University of Leicester,LE17RH,UK
文献出处：
引用格式：
[1]Yunlong Li;Xin Lin;Yunlong Hu;Jun Yu;Junguo Zhao;Hongbiao Dong;Weidong Huang-.Seynergistic effect of Mo and Zr additions on microstructure and mechanical properties of Nb-Ti-Si-based alloys additively manufactured by laser directed energy deposition)[J].材料科学技术（英文版）,2022(08):84-97
A类：
Seynergistic,22Ti,yZr,Nb3Si
B类：
effect,additions,microstructure,mechanical,properties,alloys,additively,manufactured,by,laser,directed,energy,deposition,synergistic,evolution,room,temperature,fracture,toughness,microhardness,15Si,xMo,deposited,DED,have,been,investigated,major,phases,4Mo,3Zr,are,solid,solution,Nbss,Nb5Si3,disappear,increasing,content,precipitates,due,cyclic,heating,matrix,exhibits,ori,entation,relationship,6Zr,became,relative,homogeneity,showed,better,continuity,after,treatment,transformed,into,determined,treated,When,8at,part,also,Among,highest,KQ,lowest,average,8Mo,increased,reached,m1,respectively,significantly,decreased
AB值：
0.330819
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