典型文献
A new type-γ′/γ″ coprecipitation behavior and its evolution mechanism in wrought Ni-based ATI 718Plus superalloy
文献摘要：
In the precipitation-hardened Ni-based superalloy,typified by ATI 718Plus,the nano-scale γ′ and γ″ phase in duplet or triple coprecipitate morphology can provide superior high-temperature strength.Thus,it is of great sense to study the evolution of γ′/γ″ coprecipitate during long term service at elevated temperature.In this study,the new-type γ′/γ″ coprecipitates with a sandwich or compact configura-tion were found firstly in wrought ATI 718Plus superalloy during long term thermal exposure at 705℃.These co-structure of the γ′/γ″ precipitates evidently inhibit the coarsening of γ′ phase.The increase of thermal exposure time evidently leads to the increase of the volume fraction of γ′/γ″ coprecipitate and transformation of sandwich-type γ′/γ″ coprecipitate to compact-type γ′/γ″ coprecipitate,which is characterized as γ″ phase precipitate at several faces of the γ′ phase.The main evolution mechanism of γ′/γ″ coprecipitates is element segregation,especially the composition variations of Al+Ti and Nb and their ratio of Al+Ti/Nb.In addition,the interfacial energy between γ″ phase and γ matrix also plays a key role on the γ′/γ″ coprecipitates evolution.The calculated results show that the longer thermal ex-posure time leads to the higher interfacial energy,which is beneficial for nucleation and precipitation of γ″ phase on the faces of γ′ phase.
文献关键词：
中图分类号：
作者姓名：
Qianying Guo;Zongqing Ma;Zhixia Qiao;Chong Li;Teng Zhang;Jun Li;Chenxi Liu;Yongchang Liu
作者机构：
State Key Laboratory of Hydraulic Engineering Simulation and Safety,School of Materials Science and Engineering,Tianjin University,Tianjin 300354,China;School of Mechanical Engineering,Tianjin University of Commerce,Tianjin 300134,China;Southwestern institute of physics,Chengdu,Sichuan,610041,China
文献出处：
引用格式：
[1]Qianying Guo;Zongqing Ma;Zhixia Qiao;Chong Li;Teng Zhang;Jun Li;Chenxi Liu;Yongchang Liu-.A new type-γ′/γ″ coprecipitation behavior and its evolution mechanism in wrought Ni-based ATI 718Plus superalloy)[J].材料科学技术（英文版）,2022(24):98-110
A类：
duplet,coprecipitate,coprecipitates
B类：
new,type,coprecipitation,behavior,its,evolution,mechanism,wrought,ATI,718Plus,superalloy,In,hardened,typified,by,nano,scale,phase,triple,morphology,can,provide,superior,temperature,strength,Thus,great,sense,study,during,term,service,elevated,this,sandwich,compact,configura,were,found,firstly,thermal,exposure,These,structure,evidently,inhibit,coarsening,increase,leads,volume,fraction,transformation,which,characterized,several,faces,main,element,segregation,especially,composition,variations,Al+Ti,Nb,their,ratio,addition,interfacial,energy,between,matrix,also,plays,key,role,calculated,results,show,that,longer,higher,beneficial,nucleation
AB值：
0.439831
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