High-temperature Mechanical Properties and Dynamic Recrystallization Mechanism of in situ Silicide-reinforced MoNbTaTiVSi Refractory High-entropy Alloy Composite

被引：7

作者：

Ge, Shaofan ^{[1
,2
]}

Lin, Shifeng ^{[1
]}

Fu, Huameng ^{[1
,3
,4
]}

Zhang, Long ^{[1
]}

Geng, Tieqiang ^{[1
]}

Zhu, Zhengwang ^{[1
,3
,4
]}

Li, Zhengkun ^{[1
,3
]}

Li, Hong ^{[1
,3
]}

Wang, Aimin ^{[1
,3
,4
]}

Zhang, Hongwei ^{[1
,3
,4
]}

Zhang, Haifeng ^{[1
,3
,4
]}

机构：

[1] Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China

[4] Dongguan Eontec Co Ltd, Dongguan 523662, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2022年 / 35卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Refractory high-entropy alloy composite; Mechanical properties; In situ silicide compound; Dynamic recrystallization; HOT DEFORMATION CHARACTERISTICS; CORROSION BEHAVIOR; OXIDATION BEHAVIOR; MICROSTRUCTURE; ENHANCEMENT; SUPERALLOY; DUCTILITY; BOUNDARY; TI5SI3; TI;

D O I：

10.1007/s40195-022-01394-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The hypoeutectic composite material composed of BCC phase and in situ precipitated Ti5Si3 was prepared by adding Si into MoNbTaTiV high-entropy alloy. The obvious oriented in situ Ti5Si3 phase formed eutectic phase with BCC phase in the inter-dendritic area, which leads to excellent properties of the composite. The alloy exhibits ultra-high yield stress of 718 MPa at 1200 degrees C and obvious compression plasticity. After reaching the maximum strength, dynamic recovery (DRV) and dynamic recrystallization (DRX) caused soften phenomena. The DRX mechanism of the dual-phase eutectic structure is analyzed by electron backscatter diffraction. The DRX of the BCC phase conforms to the discontinuous DRX and continuous DRX mechanisms, while the Ti5Si3 phase has a geometric DRX mechanism in addition to the above two mechanisms. The high performance of this composite has enough potential high-temperature applications such as nuclear and aero engine.

引用

页码：1617 / 1630

页数：14

共 61 条

[61] Synthesis and properties of multiprincipal component AlCoCrFeNiSix alloys
Zhu, J. M.
Fu, H. M.
Zhang, H. F.
Wang, A. M.
Li, H.
Hu, Z. Q.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (27-28): : 7210 - 7214

← 1 2 3 4 5 6 7 →