Effects of Electromagnetic Stirring Melt Treatment on Microstructure and Mechanical Properties of the Drive Rotary Shaft

Chen Jinlin; Zhou Yajun; Shi Chen; Liang Gen; Mao Daheng; Zuo Zhu

doi:10.15980/j.tzzz.2017.02.018

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Effects of Electromagnetic Stirring Melt Treatment on Microstructure and Mechanical Properties of the Drive Rotary Shaft
Vol. 37, Issue 2, Pages: 179-182(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.02.018

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[1]陈晋琳,周亚军,石琛,梁根,毛大恒,左著.电磁搅拌熔体处理对回转轴组织和性能的影响[J].特种铸造及有色合金,2017,37(02):179-182.

Chen Jinlin, Zhou Yajun, Shi Chen, et al. Effects of Electromagnetic Stirring Melt Treatment on Microstructure and Mechanical Properties of the Drive Rotary Shaft. [J]. Special Casting & Nonferrous Alloys 37(2):179-182(2017)
[1]陈晋琳,周亚军,石琛,梁根,毛大恒,左著.电磁搅拌熔体处理对回转轴组织和性能的影响[J].特种铸造及有色合金,2017,37(02):179-182. DOI： 10.15980/j.tzzz.2017.02.018.

Chen Jinlin, Zhou Yajun, Shi Chen, et al. Effects of Electromagnetic Stirring Melt Treatment on Microstructure and Mechanical Properties of the Drive Rotary Shaft. [J]. Special Casting & Nonferrous Alloys 37(2):179-182(2017) DOI： 10.15980/j.tzzz.2017.02.018.

摘要

采用光学显微镜（OM）和扫描电镜（SEM）等研究了电磁搅拌熔体处理对回转轴铸件组织和性能的影响。结果表明

在铸造过程中施加电磁搅拌不仅能明显细化铸坯凝固组织

改变晶粒形态

增加等轴晶率

而且还能减少铸坯缩松、夹杂、气孔等缺陷。铸坯试样经锻造正火加工处理后

与常规铸造相比

电磁搅拌处理后铸坯的晶粒更加细小均匀

屈服强度、抗拉强度、断面收缩率分别增加了7%、3.7%和26.3%

铸件组织和性能得到明显改善。

Abstract

Influences of electromagnetic stirring melt treatment on microstructure and mechanical properties of the drive rotary shaft were investigated.The results reveal that the electromagnetic stirring can not only refine the grains and increase the proportion of equiaxed grain in the casting billet

but also reduce the casting defects such as shrinkage

inclusion and porosity.After forging and normalizing treatment

the grain sizes in the shaft with electromagnetic stirring during solidification become the smaller and more homogeneous than that without electromagnetic stirring

so microstructure and mechanical properties of the shaft are improved obviously.In addition

ultimate tensile strength

yield strength and percentage reduction of area are increased by 3.7%

7.0%and 26.3%

respectively.