Semi-solid Casting of High Speed Steel Ingots Using Inclined Slope Pre-crystallization Method

武汉理工大学学报-材料科学版(英文版), 2009, 24(5): 750-752. doi: 10.1007/s11595-009-5750-9

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

2.School of Electromechanical Engineering,Beijing Jiaotong University,Beijing 100044,China

3.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

4.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

5.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

6.School of Electromechanical Engineering,Beijing Jiaotong University,Beijing 100044,China

基金项目: the Science Foundation of Beijing Jiaotong University(230-12)

Semi-solid Casting of High Speed Steel Ingots Using Inclined Slope Pre-crystallization Method

HE Youfeng ^1, , XING Shuming ^2, , XIE Shuisheng ^3, , HUANG Guojie ^4, , CHENG Lei ^5, , ZHANG Milan ^6,

1.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

2.School of Electromechanical Engineering,Beijing Jiaotong University,Beijing 100044,China

3.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

4.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

5.State Key Laboratory for Fabrication and Process of Nonferrous Metals,General Research Institute for Nonferrous Metals,Beijing 100088,China

6.School of Electromechanical Engineering,Beijing Jiaotong University,Beijing 100044,China

Keywords： M2 high speed steel

Semi-solid casting of M2 high speed steel ingots was investigated by inclined slope pre-crystallization method.Effects of casting temperature and slope length on the microstructure of M2 HSS ingots were investigated.M2 cast ingots of non-dendritic primary austenite and fine eutectic le-deburite network carbide structure were obtained,with the casting temperature,slope length and angle of 1480℃,500 mm and 60°respectively.Meanwhile,the microstructure of cast samples was quan-titatively assessed by Image tool software.Results show that optimum mean equivalent diameter of primary austenite crystal grain is 50.8μm,shape factor is 0.83,and mean thickness of network carbide is 5.21μm.

参考文献

[1]	Toshio Haga;Shinsuke Suzuki .Casting of aluminum alloy ingots for thixoforming using a cooling slope[J].Journal of Materials Processing Technology,2001(1/3):169-172.

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Semi-solid Casting of High Speed Steel Ingots Using Inclined Slope Pre-crystallization Method

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