PREPARATION STUDY OF SEMI-SOLID 60Si2Mn SPRING STEEL SLURRY

金属学报(英文版), 2003, 16(6): 483-488.

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1.University of Science & Technology Beijing, Beijing 100083, China

2.University of Science & Technology Beijing, Beijing 100083, China

3.University of Science & Technology Beijing, Beijing 100083, China

4.University of Science & Technology Beijing, Beijing 100083, China

5.University of Science & Technology Beijing, Beijing 100083, China

基金项目: 国家自然科学基金(59995440)

PREPARATION STUDY OF SEMI-SOLID 60Si2Mn SPRING STEEL SLURRY

Keywords： 60Si2Mn

The nondendritic semi-solid slurry preparation of 60Si2Mn spring steel is studied in this paper. The experiments show that when stirred for 2 minutes under the test condition, the semi-solid slurry with 50%-60% fraction solid phase and spherical primary austenite in the size of 100-300μm can be obtained and is easy to be discharged from the little bottom hole of the stirring chamber. The more homogeneous temperature field and solute distribution of the 60Si2Mn spring steel melt appear because of the electromagnetic stirring, which restrains the formation of large primary austenitic dendrites and create a base to form spheroidized structure. The stronger temperature fluctuation in the melt with many rosette primary austenites caused by stirring and the remelting of the secondary arm roots in the same time are the most important reasons for deposition of spheroidized primary austenites.

参考文献

[1]	R Mehrabian;M C Flemings .[J].Metallurgical and Materials Transactions,1972(3A):1925.
[2]	M C Flemings .[J].Metallurgical and Materials Transactions,1991,22A(05):957.
[3]	M Garat;S Blais.[C].in The 5th Int.Conf.on Semi-Solid Processing of Alloys and Composites,eds A.K.Bhasin,J.J.Moore,K.P.Young and S.Midson The Colorado School of Mines,Colorado,Golden,USA,June 23-25,1998:199.
[4]	P Eisen;K Young.[A].The Department of Materials Science and Chemical Engineering,Politecnico Di Torino, Turin, Italy,2000:41.
[5]	J M Oblak;W H Rand .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1976,7(07):699.
[6]	J M Oblak;W H Rand .[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1976,7(07):705.
[7]	D A V Cleave .[J].Iron Age,1977,220:34.
[8]	K P Young;R G Riek;M C Flemings .[J].Metals and Technology,1979,6(06):130.
[9]	P. Kapranos;D.H. Kirkwood;C.M. Sellars.[C].in The 4th Int. Conf. on Semi-Solid Processing of Alloys and Compositions, eds. D.H. Kirkwood and P. Kapranos The Universiy of Sheffield, England,UK, June 19-21,1996:306.
[10]	K E Blazek;J E Kelly;N S Pottore .[J].ISIJ International,1995,35(06):813.
[11]	毛卫民,赵爱民,崔成林,孙峰,郑承利,钟雪友.AlSi7Mg合金半固态连铸坯料和组织形成研究[J].金属学报,2000(05):539-544.

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PREPARATION STUDY OF SEMI-SOLID 60Si2Mn SPRING STEEL SLURRY

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