Effect of rotary swaging and subsequent annealing on microstructure and mechanical properties of W-1.5ZrO2 alloys

被引：15

作者：

Li, Zhou ^{[1
]}

Chen, Yunbo ^{[1
]}

Wei, Shizhong ^{[2
]}

Pan, Kunming ^{[2
]}

Shen, Huahai ^{[3
]}

Xu, Liujie ^{[2
]}

机构：

[1] China Acad Machinery Sci & Technol, Beijing Natl Innovat Inst Lightweight Ltd, Beijing 100089, Peoples R China

[2] Henan Univ Sci & Technol, Natl Joint Engn Res Ctr Abras Control & Molding M, Luoyang 471003, Peoples R China

[3] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 875卷

基金：

中国国家自然科学基金;

关键词：

W-ZrO2; alloy; Rotary swaging; Annealing; Grain growth; Mechanical property; ROLLED TUNGSTEN; RECRYSTALLIZATION; TEMPERATURE; TRANSITION; EVOLUTION; CONDUCTIVITY; FABRICATION; COMPOSITES; STRENGTH; BEHAVIOR;

D O I：

10.1016/j.jallcom.2021.160041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

W-1.5ZrO(2) alloy bars with two diameters, named as D9 and D5, were prepared by liquid phase method and rotary swaging method. The effects of swaging and annealing on the microstructure and mechanical properties of tungsten alloys were investigated. Under the same swaging ratio, the compressive strength of D5 tungsten alloy and D9 tungsten alloy is 23.27% and 22.37% higty her than that of pure W, respectively. After multi-pass swaging, the diameter of tungsten alloy decreased from 9 mm to 5 mm, and the hardness and compressive strength increased by 14.6% and 21.93%, respectively. After multi-pass rotary swaging, the diameter of tungsten alloy is reduced from 9 mm to 5 mm, and the hardness and compressive strength are increased by 14.6% and 21.93% respectively. The fracture mode has gradually changed from intergranular fracture to trans-granular fracture. Therefore, the strength of tungsten alloy can be improved by adding zirconia and proper swaging process. With the increase of annealing temperature or time, recrystallization and grain growth will be caused. The addition of ZrO2 can delay the recrystallization of tungsten alloy during annealing, and inhibit grain growth. When the annealing temperature is lower than 1200 degrees C, the compressive strength of tungsten alloy remains unchanged, while the failure strain increases. After annealing at 1500 degrees C, the strength and failure strain of tungsten alloy decreased by 18.9% and 35.7% respectively. In order to obtain excellent strength and toughness, annealing at 1100-1200 degrees C for 1 h can be chosen for W-1.5ZrO(2) alloy. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：13

共 45 条

[41] Spark plasma sintering of tungsten-yttrium oxide composites from chemically synthesized nanopowders and microstructural characterization [J].

Yar, M. A. ;

Wahlberg, Sverker ;

Bergqivist, Hans ;

Salem, H. G. ;

Johnsson, Mats ;

Muhammed, Mamoun .

JOURNAL OF NUCLEAR MATERIALS, 2011, 412 (02) :227-232

[42] RECRYSTALLIZATION OF MOLYBDENUM WIRE DOPED WITH LANTHANUM OXIDE [J].

YOO, MK ;

HIRAOKA, Y ;

CHOI, J .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 1995, 13 (04) :221-227

[43] Hardness loss and microstructure evolution of 90% hot-rolled pure tungsten at 1200-1350°C [J].

Yu, Ming ;

Wang, Kang ;

Zan, Xiang ;

Pantleon, Wolfgang ;

Luo, Laima ;

Zhu, Xiaoyong ;

Wu, Yucheng .

FUSION ENGINEERING AND DESIGN, 2017, 125 :531-536

[44] Recent Progress of Oxide/Carbide Dispersion Strengthened W-Based Materials [J].

Zhang Tao ;

Yan Wei ;

Xie Zhuoming ;

Miao Shu ;

Yang Junfeng ;

Wang Xianping ;

Fang Qianfeng ;

Liu Changsong .

ACTA METALLURGICA SINICA, 2018, 54 (06) :831-843

[45] Thermal shock behavior of fine grained W-Y2O3 materials fabricated via two different manufacturing technologies [J].

Zhao, Mingyue ;

Zhou, Zhangjian ;

Zhong, Ming ;

Tan, Jun ;

Lian, Youyun ;

Liu, Xiang .

JOURNAL OF NUCLEAR MATERIALS, 2016, 470 :236-243

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