Strengthening mechanisms and microstructural evolution of ductile refractory medium-entropy alloy Hf20Nb10Ti35Zr35

被引：48

作者：

Su, I-An ^{[1
]}

Tseng, Ko-Kai ^{[1
]}

Yeh, Jien-Wei ^{[1
,2
]}

El-Sayed, Badr ^{[3
,4
]}

Liu, Chia-Heng ^{[5
]}

Wang, Shing-Hoa ^{[5
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300044, Taiwan

[2] Natl Tsing Hua Univ, High Entropy Mat Ctr, Hsinchu 300044, Taiwan

[3] Petr Marine Serv Co, Cairo, Egypt

[4] Alexandria Univ, Inst Grad Studies & Res, Dept Mat Sci, Alexandria, Egypt

[5] Natl Taiwan Ocean Univ, Dept Mech Engn, Keelung 202301, Taiwan

来源：

SCRIPTA MATERIALIA | 2022年 / 206卷

关键词：

X-ray diffraction (XRD); Refractory metals; Plastic deformation; Phase transformations; Entropy alloy; PHASE; TITANIUM; OMEGA;

D O I：

10.1016/j.scriptamat.2021.114225

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A metastable beta-type medium-entropy refractory alloy, Hf20Nb10Ti35Zr35, was designed to have a ductile BCC structure in the as-solution-treated state. The alloy was aged to achieve the combinations of strength and ductility. The strengthening mechanisms included transformation-induced plasticity, twinning-induced plasticity and precipitation strengthening. These multiple strengthening mechanisms can serve as a basis for alloy design and the improvement of the mechanical properties of alloys. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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