典型文献
Deformation and phase transformation behaviors of a high Nb-containing TiAl alloy compressed at intermediate temperatures
文献摘要：
In modern β-solidified TiAl alloys,the decomposition of α2 phase is frequently observed during heat treatment or high-temperature deformation of the alloys.In this study,high-temperature deformation and decomposition mechanisms of α2 phase in a Ti-45Al-8.5Nb-0.2B-0.2W-0.02Y alloy are investigated.In a sample deformed at 800℃,the precipitation of βo(ωo)phase is observed within the equiaxed α2 phase.The nucleation of ωo particles within the βo matrix indicates the α2→βo→ωo transformation.In addition,numerous γ phase precipitates form within the βo(ω)areas.The α2 lamellae decompose into ultrafine(α2+γ)lamellae and coarsened γ lamellae via α2→α2+γ and α2→γ transformation,re-spectively.Moreover,the ωo phase nucleates within the ultrafine lamellae via α2→ωo transformation.However,in a sample deformed at 1000℃,the nucleation of βo particles is sluggish,which is caused by the efficient release of the internal stress via dynamic recrystallization(DRX).These results indicate that complex phase transformations can be introduced by the decomposition of α2 phase in TiAl alloys with a high amount of β-stabilizing elements.
文献关键词：
中图分类号：
作者姓名：
Xu Liu;Lin Song;Andreas Stark;Uwe Lorenz;Zhanbing He;Junpin Lin;Florian Pyczak;Tiebang Zhang
作者机构：
State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Institute of Materials Research,Helmholtz-Zentrum Geesthacht,Max Planck-Str.1,Geesthacht 21502,Germany;State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China
文献出处：
引用格式：
[1]Xu Liu;Lin Song;Andreas Stark;Uwe Lorenz;Zhanbing He;Junpin Lin;Florian Pyczak;Tiebang Zhang-.Deformation and phase transformation behaviors of a high Nb-containing TiAl alloy compressed at intermediate temperatures)[J].材料科学技术（英文版）,2022(07):89-96
A类：
02Y,nucleates
B类：
Deformation,phase,behaviors,high,containing,TiAl,compressed,intermediate,temperatures,In,modern,solidified,alloys,decomposition,frequently,observed,during,heat,treatment,deformation,this,study,mechanisms,45Al,5Nb,2B,2W,investigated,sample,deformed,precipitation,within,equiaxed,nucleation,particles,matrix,indicates,addition,numerous,precipitates,areas,lamellae,decompose,into,ultrafine,2+,coarsened,via,spectively,Moreover,However,sluggish,which,caused,by,efficient,release,internal,stress,dynamic,recrystallization,DRX,These,results,that,complex,transformations,can,introduced,amount,stabilizing,elements
AB值：
0.511071
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