Joining thick section aluminum to steel with suppressed FeAl intermetallic formation via friction stir dovetailing

被引：49

作者：

Reza-E-Rabby, Md. ^{[1
]}

Ross, Kenneth ^{[1
]}

Overman, Nicole R. ^{[1
]}

Olszta, Matthew J. ^{[1
]}

McDonnell, Martin ^{[2
]}

Whalen, Scott A. ^{[1
]}

机构：

[1] Pacific Northwest Natl Lab, Appl Mat & Proc Grp, 902 Battelle Blvd, Richland, WA 99352 USA

[2] US Army Tank Automot Res Dev & Engn Ctr, 6501 E 11 Mile Rd, Warren, MI 48397 USA

来源：

SCRIPTA MATERIALIA | 2018年 / 148卷

基金：

美国能源部;

关键词：

Friction stir dovetailing; Joining; Intermetallics; Fracture; Friction stir welding; HIGH-STRENGTH STEEL; LAP JOINT; MECHANICAL-PROPERTIES; STAINLESS-STEEL; INTERFACIAL MICROSTRUCTURE; AISI-1018; STEEL; ALLOY; PARAMETERS; AL; 6061-T6;

D O I：

10.1016/j.scriptamat.2018.01.026

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new solid-phase technique called friction stir dovetailing (FSD) has been developed for joining thick section aluminum to steel. In FSD, mechanical interlocks are formed at the aluminum-steel interface and are reinforced by metallurgical bonds where intermetallic growth has been uniquely suppressed. Lap shear testing shows superior strength and extension at failure compared to friction stir approaches where metallurgical bonding is the only joining mechanism. High resolution microscopy revealed the presence of a 40-70 nm interlayer having a composition of 76.4 at.% Al, 18.4 at.% Fe, and 52 at.% Si, suggestive of limited FeAl3 intermetallic formation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：63 / 67

页数：5

共 45 条

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