Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 703, Issue -, Pages 454-460Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.01.355
Keywords
Cu-Cr alloy; Continuous extrusion; Dislocations; Recrystallization; Hardness
Categories
Funding
- National Natural Science Foundation of China [51601227]
- National Key Research and Development Program of China [2016YFB0301300, 2016YFB0301400]
- China Postdoctorates Science Foundation [2016M590753]
- Project of Innovation-Driven Plan, Central South University, Changsha, China
- Project of State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
Ask authors/readers for more resources
The microstructure evolution and properties of a typical precipitation strengthened Cu-0.82Cr alloy during continuous extrusion were investigated by means of optical microscopy, transmission electron microscopy, hardness and conductivity measurement. The severe plastic deformation and precipitation behavior of the alloy during deformation were discussed in detail. The results showed that hardness increased firstly until reaching the maximum value of 148 HB in right-angle bending, and then decreased in the extending extrusion zone. Severe deformation and precipitation process occurred during continuous extrusion, and the nano-scale precipitates inhibited the recrystallization in some extent, both of which contributed to the properties of the extruded alloy. The extruded alloy had an average grain size of about 1.5 mu m, and it reached a yield strength, ultra-strength, elongation and electrical conductivity of 292 MPa, 346 MPa, 34% and 77.5% IACS, respectively. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available