Single crystal plastic behavior of a single-phase, face-center-cubic-structured, equiatomic FeNiCrCo alloy

Z. Wu; Y. F. Gao; H. Bei

doi:10.1016/j.scriptamat.2015.07.031

Single crystal plastic behavior of a single-phase, face-center-cubic-structured, equiatomic FeNiCrCo alloy

Z. Wu, Y. F. Gao, H. Bei

Surface Chemistry & Catalysis Group

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

To understand the fundamental deformation mechanisms of compositionally complex alloys, single crystals of a multi-component equiatomic FeNiCoCr alloy with face-center-cubic (FCC) structure were grown for mechanical studies. Similar to typical FCC pure metals, slip trace analyses indicate that dislocation slips take place on (1 1 1) planes along [110] directions. The critical resolved shear stress (CRSS) obeys the Schmid law at both 77 and 293 K, and tension-compression asymmetry is not observed. Although this material slips in a normal FCC manner both at 293 and 77 K, the strong temperature dependence of the CRSS is abnormal in comparison to the typical FCC metals.

Original language	English
Article number	10743
Pages (from-to)	108-112
Number of pages	5
Journal	Scripta Materialia
Volume	109
DOIs	https://doi.org/10.1016/j.scriptamat.2015.07.031
State	Published - Dec 1 2015

Keywords

Compositionally complex alloys
High entropy alloys
Single crystal plasticity
Slip trace analysis
Temperature dependence

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10.1016/j.scriptamat.2015.07.031

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title = "Single crystal plastic behavior of a single-phase, face-center-cubic-structured, equiatomic FeNiCrCo alloy",

abstract = "To understand the fundamental deformation mechanisms of compositionally complex alloys, single crystals of a multi-component equiatomic FeNiCoCr alloy with face-center-cubic (FCC) structure were grown for mechanical studies. Similar to typical FCC pure metals, slip trace analyses indicate that dislocation slips take place on (1 1 1) planes along [110] directions. The critical resolved shear stress (CRSS) obeys the Schmid law at both 77 and 293 K, and tension-compression asymmetry is not observed. Although this material slips in a normal FCC manner both at 293 and 77 K, the strong temperature dependence of the CRSS is abnormal in comparison to the typical FCC metals.",

keywords = "Compositionally complex alloys, High entropy alloys, Single crystal plasticity, Slip trace analysis, Temperature dependence",

author = "Z. Wu and Gao, {Y. F.} and H. Bei",

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AU - Wu, Z.

AU - Gao, Y. F.

AU - Bei, H.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - To understand the fundamental deformation mechanisms of compositionally complex alloys, single crystals of a multi-component equiatomic FeNiCoCr alloy with face-center-cubic (FCC) structure were grown for mechanical studies. Similar to typical FCC pure metals, slip trace analyses indicate that dislocation slips take place on (1 1 1) planes along [110] directions. The critical resolved shear stress (CRSS) obeys the Schmid law at both 77 and 293 K, and tension-compression asymmetry is not observed. Although this material slips in a normal FCC manner both at 293 and 77 K, the strong temperature dependence of the CRSS is abnormal in comparison to the typical FCC metals.

AB - To understand the fundamental deformation mechanisms of compositionally complex alloys, single crystals of a multi-component equiatomic FeNiCoCr alloy with face-center-cubic (FCC) structure were grown for mechanical studies. Similar to typical FCC pure metals, slip trace analyses indicate that dislocation slips take place on (1 1 1) planes along [110] directions. The critical resolved shear stress (CRSS) obeys the Schmid law at both 77 and 293 K, and tension-compression asymmetry is not observed. Although this material slips in a normal FCC manner both at 293 and 77 K, the strong temperature dependence of the CRSS is abnormal in comparison to the typical FCC metals.

KW - Compositionally complex alloys

KW - High entropy alloys

KW - Single crystal plasticity

KW - Slip trace analysis

KW - Temperature dependence

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M1 - 10743

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Single crystal plastic behavior of a single-phase, face-center-cubic-structured, equiatomic FeNiCrCo alloy

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