Complete precipitate dissolution during adiabatic shear localisation in a Ni-based superalloy

被引：8
|
作者：
Colliander, Magnus Hornqvist [1 ]
Sundell, Gustav [2 ]
Thuvander, Mattias [1 ]
机构：
[1] Chalmers Univ Technol, Dept Phys, Gothenburg, Sweden
[2] Chalmers Univ Technol, Dept Chem & Chem Engn, Gothenburg, Sweden
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2020年 / 100卷 / 12期
基金：
瑞典研究理事会;
关键词：
Adiabatic shear bands; precipitation; atom probe tomography; superalloy; STRAIN-RATE; DYNAMIC DEFORMATION; MICROSTRUCTURE EVOLUTION; BAND; RECRYSTALLIZATION;
D O I：
10.1080/09500839.2020.1820595
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Whereas microstructure evolution in adiabatic shear bands have been thoroughly studied, reports on the stability of hardening precipitates during shear localisation are scarce. We report an atomic scale investigation of solute distribution in adiabatic shear bands in a precipitation strengthened Ni-Fe-based superalloy, showing that the hardening particles are completely dissolved. Temperature estimations indicate that peak temperatures in the shear band above the solvus limits of the precipitates are not unrealistic, and thus diffusion-assisted transformations during the severe plastic deformation cannot be ruled out.
引用
收藏
页码：561 / 570
页数：10
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