Highly stable nanoscale amorphous microstructure at steel-aluminum interface enabled by a new solid-state additive manufacturing method

被引：16

作者：

Zhang, M. ^{[1
,2
]}

Liu, F. C. ^{[1
,2
]}

Liu, Z. Y. ^{[1
,2
]}

Xue, P. ^{[1
,2
]}

Dong, P. ^{[3
,4
]}

Zhang, H. ^{[1
,2
]}

Wu, L. H. ^{[1
,2
]}

Ni, D. R. ^{[1
,2
,5
]}

Ma, Z. Y. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

[3] Univ Michigan, Dept Naval Architecture & Marine Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA

[5] Binzhou Inst Technol, Shandong Key Lab Adv Aluminum Mat & Technol Pk, Shandong 256606, Peoples R China

来源：

SCRIPTA MATERIALIA | 2023年 / 227卷

基金：

中国国家自然科学基金;

关键词：

Dissimilar metal welding; Modified friction stir additive manufacture; Nanoscale amorphous microstructure; Intermetallic compounds; Friction stir welding; JOINT; PHASE; CRYSTALLIZATION; STRENGTH; ALLOYS; GLASS;

D O I：

10.1016/j.scriptamat.2023.115300

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In contrast to the established understanding that the interfacial microstructure of the bonded steel-aluminum (Fe-Al) structures coarsens significantly at elevated temperatures, this study shows that the special nanoscale interfacial layer of the Fe-Al bimetallic structures fabricated by a newly developed modified friction stir additive manufacturing (M-FSAM) exhibited extraordinary stability up to 500 degrees C. In tensile tests, the heat-treated Fe-Al samples failed within the aluminum alloys rather than along the Fe-Al interface. The heat treatment at 500 degrees C did not cause any observable microstructure change in the special nanoscale interfacial layer, which still consisted of a noncontinuous layer of Al-Fe-Si particles and a continuous Mg and O rich layer. The noncontinuous Al-Fe-Si particles were made of an amorphous-like microstructure and the Mg and O rich layer was comprised of an amorphous matrix interspersed with nanocrystalilne particles.

引用

页数：6

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