Reducing corrosion of additive manufactured magnesium alloys by interlayer ultrasonic peening

被引：21
|
作者：
Sealy, M. P. [1 ]
Karunakaran, R. [1 ]
Ortgies, S. [1 ]
Madireddy, G. [1 ]
Malshe, A. P. [2 ]
Rajurkar, K. P. [1 ]
机构：
[1] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA
[2] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA
来源：
CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2021年 / 70卷 / 01期
基金：
美国国家科学基金会;
关键词：
Additive manufacturing; Hybrid manufacturing; Magnesium; 420; STAINLESS-STEEL;
D O I：
10.1016/j.cirp.2021.04.052
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Additive manufad (AM) magn alloys corrode rapidly due to tensile stress and coarse microstructures. Cyclically combining (hybridizing) additive manufacturing with interlayer ultrasonic peening was proposed as a solution to improve corrosion resistance of additive manufactured magnesium WE43 alloy through strengthening mechanisms and compressive residual stress. Applying interlayer peening work hardened discrete layers and formed a glocal integrity of regional grain refinement and subsurface compressive residual stress barriers. Tensile residual stress that typically accelerates corrosion decreased 90%. Results showed time resolved control over corrosion was attainable by interlayer peening, and local corrosion within print cells decreased 57% with respect to as-printed WE43. (c) 2021 CIRP. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：179 / 182
页数：4
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