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Title: Evaluation of intermetallic compound layer at aluminum/steel interface joined by friction stir scribe technology

Abstract

Heat input and high strain rate deformation during friction stir welding of aluminum and steel resulted in the diffusion-based formation of a FexAly intermetallic compound (IMC) layer. Compared with conventional friction stir welding tools, a friction stir scribe tool can reduce heat input significantly limiting the IMC layer thickness (~100–750 nm). Friction stir scribe joined lap joints fractured either through the welded interface or within the base aluminum alloy on the loading side, depending on IMC layer thickness during tensile lap shear testing. In addition, a modified effective heat of formation model predicted that Al13Fe4 formed first at aluminum/steel interface and, during welding process, was substituted by Al5Fe2 with local silicon enrichment, which was verified via microstructural characterization.

Authors:
 [1]; ORCiD logo [2];  [2];  [3];  [4];  [5]
  1. Univ. of North Texas, Denton, TX (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Univ. of North Texas, Denton, TX (United States)
  3. Brigham Young Univ., Provo, UT (United States)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  5. General Motors Technical Center, Warren, MI (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1530733
Alternate Identifier(s):
OSTI ID: 1507548
Report Number(s):
PNNL-SA-142807
Journal ID: ISSN 0264-1275
Grant/Contract Number:  
NSF-IIP 1157754; AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
Materials & Design
Additional Journal Information:
Journal Volume: 174; Journal Issue: C; Journal ID: ISSN 0264-1275
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Friction stir scribe technology; Dissimilar; Intermetallic; Thermodynamic; Kinetic

Citation Formats

Wang, Tianhao, Sidhar, Harpreet, Mishra, Rajiv S., Hovanski, Yuri, Upadhyay, Piyush, and Carlson, Blair. Evaluation of intermetallic compound layer at aluminum/steel interface joined by friction stir scribe technology. United States: N. p., 2019. Web. doi:10.1016/j.matdes.2019.107795.
Wang, Tianhao, Sidhar, Harpreet, Mishra, Rajiv S., Hovanski, Yuri, Upadhyay, Piyush, & Carlson, Blair. Evaluation of intermetallic compound layer at aluminum/steel interface joined by friction stir scribe technology. United States. https://doi.org/10.1016/j.matdes.2019.107795
Wang, Tianhao, Sidhar, Harpreet, Mishra, Rajiv S., Hovanski, Yuri, Upadhyay, Piyush, and Carlson, Blair. Fri . "Evaluation of intermetallic compound layer at aluminum/steel interface joined by friction stir scribe technology". United States. https://doi.org/10.1016/j.matdes.2019.107795. https://www.osti.gov/servlets/purl/1530733.
@article{osti_1530733,
title = {Evaluation of intermetallic compound layer at aluminum/steel interface joined by friction stir scribe technology},
author = {Wang, Tianhao and Sidhar, Harpreet and Mishra, Rajiv S. and Hovanski, Yuri and Upadhyay, Piyush and Carlson, Blair},
abstractNote = {Heat input and high strain rate deformation during friction stir welding of aluminum and steel resulted in the diffusion-based formation of a FexAly intermetallic compound (IMC) layer. Compared with conventional friction stir welding tools, a friction stir scribe tool can reduce heat input significantly limiting the IMC layer thickness (~100–750 nm). Friction stir scribe joined lap joints fractured either through the welded interface or within the base aluminum alloy on the loading side, depending on IMC layer thickness during tensile lap shear testing. In addition, a modified effective heat of formation model predicted that Al13Fe4 formed first at aluminum/steel interface and, during welding process, was substituted by Al5Fe2 with local silicon enrichment, which was verified via microstructural characterization.},
doi = {10.1016/j.matdes.2019.107795},
journal = {Materials & Design},
number = C,
volume = 174,
place = {United States},
year = {Fri Apr 12 00:00:00 EDT 2019},
month = {Fri Apr 12 00:00:00 EDT 2019}
}

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Works referencing / citing this record:

Mechanism of intermetallic compound formation during the dissimilar friction stir welding of aluminum and steel
journal, October 2019


A prediction of Fe-Al IMC layer thickness in TIG-assisted hybrid friction stir welded Al/steel dissimilar joints by numerical analysis
journal, November 2019

  • Bang, Hee-Seon; Hong, Seong Min; Das, Atanu
  • The International Journal of Advanced Manufacturing Technology, Vol. 106, Issue 1-2
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