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

doi:10.1016/j.matdes.2019.107795

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

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Abstract

Heat input and high strain rate deformation during friction stir welding of aluminum and steel resulted in the diffusion-based formation of a Fe _xAl _y 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 Al ₁₃Fe ₄ formed first at aluminum/steel interface and, during welding process, was substituted by Al ₅Fe ₂ with local silicon enrichment, which was verified via microstructural characterization.

Authors:

Wang, Tianhao ^[1];

^[2]; Mishra, Rajiv S. ^[2]; Hovanski, Yuri ^[3]; Upadhyay, Piyush ^[4]; Carlson, Blair ^[5]

Univ. of North Texas, Denton, TX (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Univ. of North Texas, Denton, TX (United States)
Brigham Young Univ., Provo, UT (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
General Motors Technical Center, Warren, MI (United States)

Publication Date:: 2019-04-12

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.

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                    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.  doi:10.1016/j.matdes.2019.107795.

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                    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.  doi:10.1016/j.matdes.2019.107795.  https://www.osti.gov/servlets/purl/1530733.

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@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         = {2019},

  month        = {4}

}

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