期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 225, 期 -, 页码 310-317出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2015.06.010
关键词
Severe plastic deformation (SPD); Repetitive upsetting (RU); Finite element modeling (FEM); Magnesium alloys; Homogeneity
资金
- National Natural Science Foundation of China (NSFC) [51374145, 51074106, 50674067]
- Ministry of Education of P.R. China
- National Key Technology R & D Program of China [2011BAE22B01-5]
- Science and Technology Commission of Shanghai Municipality [09JC1408200, 06SR07104]
A novel severe plastic deformation (SPD) process called repeated-upsetting (RU), which produces homogenous samples of large size, is employed to process a high performance magnesium alloy Mg-9.8Gd-2.7Y-0.4Zr at 350 degrees C with 1-4 passes. Homogenous microstructure and mechanical properties can be achieved after 4 passes of RU. Experimental and finite-element modeling results show that effective strain accumulation with more passes can improve both grain refinement and micro-hardness of samples. (C) 2015 Elsevier B.V. All rights reserved.
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