Effects of W micro-additions on precipitation kinetics and mechanical properties of an Al-Mn-Mo-Si-Zr-Sc-Er alloy

被引：7
作者：
Shu, Shipeng [1 ]
Luca, Anthony De [1 ,2 ]
Dunand, David C. [1 ]
Seidman, David N. [1 ,3 ]
机构：
[1] Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA
[2] Empa, Swiss Fed Labs Mat Sci & Technol, Lab Adv Mat Proc, Uberlandstr 129, CH-8600 Dubendorf, Switzerland
[3] Northwestern Univ, Ctr Atom Probe Tomog, 2220 Campus Dr, Evanston, IL 60208 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2021年 / 803卷
关键词：
Aluminum alloys; Precipitation kinetics; Atom-probe tomography; Elevated-temperature; MICROSTRUCTURAL EVOLUTION; CREEP; SCANDIUM;
D O I：
10.1016/j.msea.2020.140550
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A micro-addition (0.025 at.%) of slow-diffusing W to an Al-0.26Mn-0.11Mo-0.11Si-0.08Zr-0.02Sc-0.01Er (at.%) alloy accelerates L1(2)-Al-3(Zr,Sc) precipitation but retards alpha-Al(Mn,Mo)Si precipitation. The W micro-addition increases the peak-microhardness of the alloy during isothermal aging but does not improve the coarsening resistance and creep resistance.
引用
收藏
页数：6
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