On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys

Benay Uzer; S. Picak; J. Liu; T. Jozaghi; D. Canadinc; I. Karaman; Y.I. Chumlyakov; I. Kireeva

doi:10.1080/21663831.2018.1478331

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On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys

Original Report | 更新时间：2026-08-19

- On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys
- Materials Research Letters Vol. 6, Issue 8, Pages: 442-449(2018)
- 作者机构：
  
  1. Department of Mechanical Engineering Koç University
  2. Department of Materials Science and Engineering Texas A&M University College Station Texas USA
  3. Department of Mechanical Engineering Texas A&M University College Station
  4. Department of Mechanical Engineering Koç University Istanbul Turkey
  5. Department of Materials Science and Engineering Texas A&M University College Station
  6. Siberian Physical Technical Institute Tomsk State University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1478331
  CLC：
- Online First：06 June 2018，
  
  Published：2018
- 稿件说明：
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Benay Uzer, S. Picak, J. Liu, et al. On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys[J]. Materials Research Letters, 2018, 6(8): 442-449.
DOI：

Benay Uzer, S. Picak, J. Liu, et al. On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys[J]. Materials Research Letters, 2018, 6(8): 442-449. DOI： 10.1080/21663831.2018.1478331.

摘要

Abstract

BSTRACTUnusual strain hardening response and ductility of NiCoCr equiatomic alloy were investigated through microstructural analysis of [111]

[110] and [123] single crystals deformed under tension. Nano-twinning prevailed at

as early as

4% strain along the [110] orientation

providing a steady work hardening

and thereby a significant ductility. While single slip dominated in the [123] orientation at the early stages of deformation

multiple slip and nanotwinning was prominent in the [111] orientation. Significant dislocation storage capability and resistance to necking due to nanotwinning provided unprecedented ductility to NiCoCr medium entropy alloys

making it superior than quinary variants

and conventional low and medium stacking fault energy steels.

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