In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures

Bingqiang Wei; Wenqian Wu; Dongyue Xie; Huai-Hsun Lien; Metin Kayitmazbatir; Amit Misra; Jian Wang

doi:10.1080/21663831.2021.1987346

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In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures

Original Report | 更新时间：2026-08-19

- In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
- In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures
- 材料研究快报（英文） 2021年9卷第12期页码：507-515
- 作者机构：
  
  1. a Department of Mechanical and Materials of Engineering University of Nebraska-Lincoln,Lincoln
  2. b Department of Materials Science and Engineering University of Michigan
  3. b Department of Materials Science and Engineering University of Michigan Ann Arbor USA
  4. c Department of Mechanical Engineering University of Michigan Ann Arbor
  5. a Department of Mechanical and Materials of Engineering University of Nebraska-Lincoln Lincoln NE USA
  6. d Nebraska Center for Materials and Nanoscience University of Nebraska-Lincoln,Lincoln
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.1987346
  中图分类号：
- 网络首发：2021-10-12，
  
  纸质出版：2021
- 稿件说明：
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Bingqiang Wei, Wenqian Wu, Dongyue Xie, 等. In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures[J]. 材料研究快报（英文）, 2021,9(12):507-515.

Bingqiang Wei, Wenqian Wu, Dongyue Xie, et al. In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures[J]. Materials Research Letters, 2021, 9(12): 507-515.
Bingqiang Wei, Wenqian Wu, Dongyue Xie, 等. In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures[J]. 材料研究快报（英文）, 2021,9(12):507-515. DOI： 10.1080/21663831.2021.1987346.

Bingqiang Wei, Wenqian Wu, Dongyue Xie, et al. In situ characterization of tensile behavior of laser rapid solidified Al–Si heterogeneous microstructures[J]. Materials Research Letters, 2021, 9(12): 507-515. DOI： 10.1080/21663831.2021.1987346.

摘要

Abstract

Heterogeneous Al–Si microstructure comprising of sub-micron-scale Al dendrites and nanoscale Al–Si fibrous eutectic was fabricated by processing as-cast Al-20wt.%Si alloy using laser rapid solidification.

In situ

tension tests explored high tensile strength (∼600 MPa) and ductility (∼10%) and high strain hardening rate (∼7 GPa). Microstructural characterization revealed the plastic co-deformation mechanisms between soft Al dendrites and hard nanoscale Al–Si eutectic. The progression of plasticity in nanoscale Al–Si eutectic with increasing applied strain is accommodated by dislocation plasticity in the nano-Al channels and cracking Si nanofibers. The propagation of nano-cracks is suppressed by surrounding Al

retaining good ductility of the sample.

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