Surface modification of Cu-W powder metallurgical alloy induced by high-current pulsed electron beam

被引：32

作者：

Zhang, Conglin ^{[1
]}

Gao, Qi ^{[1
]}

Lv, Peng ^{[1
]}

Cai, Jie ^{[2
]}

Peng, Ching-Tun ^{[1
]}

Jin, Yunxue ^{[3
]}

Guan, Qingfeng ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ, Engn Inst Adv Mfg & Modern Equipment Technol, Zhenjiang 212013, Peoples R China

[3] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China

来源：

POWDER TECHNOLOGY | 2018年 / 325卷

基金：

中国国家自然科学基金;

关键词：

High-current pulsed electron beam (HCPEB); Cu-W alloys; Microstructure; Microhardness; Wear behavior; NANOCRYSTALLINE COPPER; MICROSTRUCTURE; COATINGS; NANOCOMPOSITES; MECHANISMS; MORPHOLOGY; PROPERTY; ENERGY;

D O I：

10.1016/j.powtec.2017.11.037

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The purpose of this paper is to investigate the microstructure and properties of Cu-W alloys induced by high current pulsed electron beam (HCPEB) irradiation. The microstructural observation shows that craters were formed after 5 pulses of HCPEB irradiation. With the increasing numbers of pulses, these craters were further fused and eliminated, which results in an excellent surface finishing. In addition, the composition of melted layer was homogenized because of the inter-diffusion between Cu and W atoms. During the process of HCPEB irradiation, several modifications were formed, including Cu (W) solid solution, ultrafine grains, amorphous phase, and long-period superlattice phase, which significantly increased the microhardness of the surface. The results of sliding wear tests indicate that the HCPEB irradiated samples exhibited better properties as compared to that of the initial one, which was attributed to the ultrafine W particles embedded in the Cu matrix. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：340 / 346

页数：7

共 31 条

[1] Braunovic M., 2007, ELECT CONTACTS FUNDA, V34, P72
[2] Thermal Cycling Behavior of Thermal Barrier Coatings with MCrAIY Bond Coat Irradiated by High-Current Pulsed Electron Beam
Cai, Jie
Lv, Peng
Guan, Qingfeng
Xu, Xiaojing
Lu, Jinzhong
Wang, Zhiping
Han, Zhiyong
[J]. ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (47) : 32541 - 32556
[3] Cheng J, 2007, MAT SCI ENG A-STRUCT, V461, P1
[4] Preparation and characterization of W-Cu nanopowders by a homogeneous precipitation process
Cheng, Jigui
Lei, Chunpeng
Xiong, Ertao
Jiang, Yang
Xia, Yonghong
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 421 (1-2) : 146 - 150
[5] Experimental investigations on the synthesis of W-Cu nanocomposite through spark plasma sintering
Elsayed, Ayman
Li, Wei
El Kady, Omayma A.
Daoush, Walid M.
Olevsky, Eugene A.
German, Randall M.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 639 : 373 - 380
[6] An investigation on morphology and structure of Cu-Cr alloy powders prepared by mechanical milling and alloying
Fang, Qiang
Kang, Zhixin
[J]. POWDER TECHNOLOGY, 2015, 270 : 104 - 111
[7] Stabilization and strengthening of nanocrystalline copper by alloying with tantalum
Frolov, T.
Darling, K. A.
Kecskes, L. J.
Mishin, Y.
[J]. ACTA MATERIALIA, 2012, 60 (05) : 2158 - 2168
[8] Review: liquid phase sintering
German, Randall M.
Suri, Pavan
Park, Seong Jin
[J]. JOURNAL OF MATERIALS SCIENCE, 2009, 44 (01) : 1 - 39
[9] Texture modification, grain refinement and improved hardness/corrosion balance of a FeAl alloy by pulsed electron beam surface treatment in the "heating mode"
Grosdidier, T.
Zou, J. X.
Stein, N.
Boulanger, C.
Hao, S. Z.
Dong, C.
[J]. SCRIPTA MATERIALIA, 2008, 58 (12) : 1058 - 1061
[10] Improvement of high-temperature strength of hot-pressed sintering silicon nitride with Lu2O3 addition
Guo, SQ
Hirosaki, N
Yamamoto, Y
Nishimura, T
Mitomo, M
[J]. SCRIPTA MATERIALIA, 2001, 45 (07) : 867 - 874

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