Ultrahigh strength and plasticity in laser rapid solidified Al–Si nanoscale eutectics

Huai-Hsun Lien; Jyoti Mazumder; Jian Wang; Amit Misra

doi:10.1080/21663831.2020.1755380

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Ultrahigh strength and plasticity in laser rapid solidified Al–Si nanoscale eutectics

Original Reports | 更新时间：2026-08-19

- Ultrahigh strength and plasticity in laser rapid solidified Al–Si nanoscale eutectics
- Materials Research Letters Vol. 8, Issue 8, Pages: 291-298(2020)
- 作者机构：
  
  1. Materials Science and Engineering University of Michigan Ann Arbor
  2. Materials Science and Engineering University of Michigan Ann Arbor MI USA
  3. Mechanical Engineering University of Michigan Ann Arbor
  4. Mechanical and Materials Engineering University of Nebraska-Lincoln,Lincoln
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1755380
  CLC：
- Online First：28 April 2020，
  
  Published：2020
- 稿件说明：
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Huai-Hsun Lien, Jyoti Mazumder, Jian Wang, et al. Ultrahigh strength and plasticity in laser rapid solidified Al–Si nanoscale eutectics[J]. Materials Research Letters, 2020, 8(8): 291-298.
DOI：

Huai-Hsun Lien, Jyoti Mazumder, Jian Wang, et al. Ultrahigh strength and plasticity in laser rapid solidified Al–Si nanoscale eutectics[J]. Materials Research Letters, 2020, 8(8): 291-298. DOI： 10.1080/21663831.2020.1755380.

摘要

Abstract

BSTRACTAs-cast Al–20wt.% Si alloys were processed via laser rapid solidification (LRS) techniques to create eutectic microstructures with nanoscale interconnected

nanotwinned Si fibers. LRS morphologies exhibit higher flow stress

exceeding 800 MPa and uniform plastic deformation above 20% compared to as-cast alloy that fractures at strains below 8% at flow strength of approximately 200 MPa. The strengthening mechanisms of LRS morphologies are interpreted in terms of the interfacial constraints: increase in yield strength as well as strain hardening rate due to nanoscale confined slip in fibrous Al–Si eutectic

and load transfer and eventual plasticity in the nanoscale Si fibers.

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Related Author

Bingqiang Wei

Wenqian Wu

Dongyue Xie

Huai-Hsun Lien

Jian Wang

Amit Misra

Metin Kayitmazbatir

Haokai Dong

Related Institution

d Nebraska Center for Materials and Nanoscience University of Nebraska-Lincoln

a Department of Mechanical and Materials of Engineering University of Nebraska-Lincoln Lincoln NE USA

b Department of Materials Science and Engineering University of Michigan Ann Arbor USA

c Department of Mechanical Engineering University of Michigan Ann Arbor

b Department of Materials Science and Engineering University of Michigan

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