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论文类型：期刊论文

发表时间：2015-05-01

发表刊物：HIGH TEMPERATURE MATERIALS AND PROCESSES

收录刊物：SCIE、EI

卷号：34

期号：3

页面范围：207-211

ISSN号：0334-6455

关键字：superalloys castings; vacuum castings; multiple-electromagnetic field; solidification structure

摘要：IN100 superalloy castings were vacuum cast with the application of multi-electromagnetic field. The effect of multiple-electromagnetic field on the solidification structure of IN100 superalloy castings has been studied. The results show that with the application of the multiple-electromagnetic field composed of the main frequency rotary electromagnetic field with 60A current and the steady direct current electromagnetic field with 290A current, the shrinkage porosity of IN100 superalloy castings is greatly improved and the fine equiaxed grain fraction of IN100 superalloy castings is increased to 100%. Moreover, the action mechanism of multiple-electromagnetic field is discussed to explain its effect on improving the solidification structure of IN100 superalloy castings.