Specifications

Authors: Zou, Jun-Tao1 ; Zhao, Jian-Ping1 ; Wang, Xian-Hui1 ; Liang, Shu-Hua1/邹军涛;赵建平;
王献辉;梁淑华
Author affiliation: 1 Shaanxi Province Key Laboratory for Electrical Materials and Infiltration
Technology, Xi'an University of Technology, Xi'an 710048, China
Corresponding author: Liang, S.-H. ([e-mail])
Source title: Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Abbreviated source title: Zhongguo Youse Jinshu Xuebao
Volume: 23
Issue: 4
Issue date: April 2013
Publication year: 2013
Pages: 1005-1011
Language: Chinese
ISSN: 10040609
CODEN: ZYJXFK
Document type: Journal article (JA)
Publisher: Central South University of Technology, Hunan, Changsha, 410083, China
Abstract: In order to refine the dendrite and eliminate the segregation of CuNiMnFe alloy, the
molten CuNiMnFe alloy was modified by trace boron addition. The effect of the modification
treatment on microstructures and properties of the CuNiMnFe alloy was studied, the
microstructure and phase were characterized by the scanning electron microscope, transmission
electron microscope and energy dispersive spectrum, and the hardness and tensile strength of
alloys were measured on Brinell hardness tester and universal material testing machine,
respectively. The results show that B addition has a significant effect on the microstructures of
CuNiMnFe alloy. In the range of 0-0.15%B (mass fraction), the increased boron addition can
refine the dendrite microstructure, reduce the secondary dendrite arm spacing (SDAS) and the
amount of eutectic β phase, while the precipitation of the secondary β and nail-head γ phase
inside the dendrites increase. At 0.10%B, SDAS is the least, the lamellar eutectic β phase almost
disappears, and the obvious secondary β phase and nail-head γ phase inside the dendrite. With
the boron adding, the as-cast hardness and aged hardness of the CuNiMnFe alloy increase at first,
and then decrease. The as-cast CuNiMnFe alloy with 0.1%B addition has the peak hardness, and
the aged peak hardness can remain the maximum hardness value of HB380. The tensile strength
of aged CuNiMnFe alloy can reach up 1130 MPa.
Number of references: 20
Main heading: Cerium alloys
Controlled terms: Alloys - Boron - Brinell hardness testing - Dendrites
(metallography) - Hardness - Microstructure - Scanning electron microscopy -
Tensile strength - Transmission electron microscopy
Uncontrolled terms: Energy dispersive spectrum - Microstructure and properties -
Microstructures and properties - Modification - Precipitated phase - Scanning Electron
Microscope - Secondary dendrite arm spacing - Transmission electron microscope
Classification code: 933.1.2 Crystal Growth - 933 Solid State Physics - 741.3 Optical
Devices and Systems - 741.1 Light/Optics - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals - 951 Materials Science - 547.2 Rare Earth Metals -