Enhanced toughness and tear resistance of thin-walled High-Pressure Die-Cast aluminum alloys through Friction stir processing

被引：8

作者：

Samanta, Avik ^{[1
]}

Lall, Amrita ^{[1
]}

Das, Hrishikesh ^{[1
]}

Seffens, Robert J. ^{[1
]}

Grant, Glenn J. ^{[1
]}

Jana, Saumyadeep ^{[1
]}

机构：

[1] Pacific Northwest Natl Lab, Energy & Environm Directorate, POB 999, Richland, WA 99354 USA

来源：

MATERIALS LETTERS | 2024年 / 357卷

关键词：

High-pressure die -casting; Friction stir processing; Toughness; Tear resistance; Aluminum alloys; BOUNDARY WETTING TRANSITION; MICROSTRUCTURE;

D O I：

10.1016/j.matlet.2023.135752

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, we investigate the toughness and resistance to tear of thin-wall high-pressure die-cast (HPDC) aluminum alloys in two different orientations following the implementation of friction stir processing (FSP). The FSP technique was applied to two different HPDC Al-Si alloys: the recyclable-grade, high iron, A380 alloy and the premium-quality, low iron, Aural-5 alloy. Our findings reveal significant tear resistance and strength enhance-ments for both alloys after FSP modification. Specifically, FSPed A380 alloy requires 126% higher energy to tear, and it has 49% higher tear strength than the HPDC counterpart. Similarly, the tear energy and tear strength of the Aural-5 alloy witness enhancements of 69% and 21%, respectively. These findings emphasize the capability of FSP to improve the toughness of HPDC aluminum alloys, creating new possibilities for preventing cracks in a variety of engineering applications.

引用

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