典型文献
Precipitation sequences in rapidly solidified Allvac 718Plus alloy during solution treatment
文献摘要：
Allvac 718Plus alloy is a compromising Ni-based superalloy at elevated-temperature of 704℃,due to its combination of good mechanical properties and excellent structure stability.The precipitation behaviors during heat treatment in Allvac 718Plus alloy processed by rapid solidification technique were systemat-ically investigated in this work.The evolution of secondary phases in rapidly solidified(RS)718Plus alloy during annealing at 960℃is:η+MC in 1 h,η+MC+Laves(C14)in 6 h,and MC+Laves(C14)in longer duration.The growth and dissolution behaviors of η phase are evidenced in RS samples and differ-ent types of dislocations at the η/γ interface are characterized.Based on these experimental observations,we examine the transformation mechanisms of γ→η and η→γ,which are related to the formation of stacking faults(SFs)with a 1/6[211]γ Shockley partial dislocation and the climbing of 1/4[00001]η edge dis-locations at the η/γ interface,respectively.Both MC and Laves(C14)phases are enriched in Nb and Mo,with a higher level of Ti in MC carbides and Cr in the Laves(C14)phase.The precipitation of MC carbides is driven by the high concentration of C atoms in γ-matrix,while the Cr segregation promotes the later nucleation of Laves(C14)phase in γ-matrix around MC carbides,which is due to the Cr atoms rejection from MC carbides into the matrix.
文献关键词：
中图分类号：
作者姓名：
Liting Tang;Qianying Guo;Chong Li;Chenxi Liu;Yongchang Liu
作者机构：
State Key Laboratory of Hydraulic Engineering Simulation and Safety,School of Materials Science&Engineering,Tianjin University,Tianjin 300354,China
文献出处：
引用格式：
[1]Liting Tang;Qianying Guo;Chong Li;Chenxi Liu;Yongchang Liu-.Precipitation sequences in rapidly solidified Allvac 718Plus alloy during solution treatment)[J].材料科学技术（英文版）,2022(33):180-194
A类：
Allvac,systemat,+MC+Laves,MC+Laves
B类：
Precipitation,sequences,rapidly,solidified,718Plus,during,treatment,compromising,superalloy,elevated,temperature,due,its,combination,good,mechanical,properties,excellent,structure,stability,precipitation,behaviors,heat,processed,by,solidification,technique,were,ically,investigated,this,work,evolution,secondary,phases,RS,annealing,C14,longer,duration,growth,dissolution,are,evidenced,samples,differ,types,dislocations,interface,characterized,Based,these,experimental,observations,examine,transformation,mechanisms,which,related,stacking,faults,SFs,Shockley,partial,climbing,edge,respectively,Both,enriched,Nb,Mo,higher,level,Ti,carbides,driven,concentration,atoms,matrix,while,segregation,promotes,later,nucleation,around,rejection,from,into
AB值：
0.46463
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