期刊
MATERIALS RESEARCH EXPRESS
卷 7, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab8c73
关键词
WE34-1Ni alloys; electromagnetic induction heating; semi-solid treatment; microstructure evolution; mechanical properties
资金
- China Scholarship Council [201807000021]
- Key Development Project of Sichuan Province [2017GZ0399]
- 2017 Doctoral Innovation Fund Program of Southwest Jiaotong University [D-CX201733]
- Innovative & Practice Project of Graduate School of Southwest Jiaotong University [2018KXK05]
The semi-solid billets of Mg-2.4Y-4Nd-0.5Zr-1Ni (WE34-1Ni) alloys are fabricated by electro-magnetic induction heating semi-solid treatment at 2.05 kW and 4.10 kW from 580 degrees C to 625 degrees C. In this work, the microstructure evolution and mechanical properties of WE34-1Ni alloys are investigated, and the results reveal that with increasing semi-solid temperatures, the average grain size of the solid globules and liquid fraction at the grain boundary gradually increase while the shape factor fluctuates slightly. Compared with 2.05 kW power, the semi-solid billet with 4.10 kW power at 625 degrees C has more fine homogeneous grains, the lower average size of the solid globules, more liquid fraction. The semi-solid billet with 4.10 kW at 625 degrees C obtains ideal semi-solid spheroid structure with the solid grains surrounded by a small amount of liquid pools and the best mechanical properties of the semi-solid process parameters. Besides, the elongation as-extruded of WE34-1Ni alloys increased from 21.4 0.7% to 33.2 0.3% at 4.10 kW power and 625 degrees C via electro-magnetic induction heating semi-solid treatment.
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