保持时间对半固态铸-锻6061合金成分偏析的影响

谭建波; 李立新

doi:10.15980/j.tzzz.2017.08.012

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保持时间对半固态铸-锻6061合金成分偏析的影响
Effects of Holding Time on Composition Segregation in Semi-solid Casting-forging 6061 Alloy
2017年37卷第8期页码：853-855
纸质出版日期： 2017 ，
DOI： 10.15980/j.tzzz.2017.08.012

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[1]谭建波,李立新.保持时间对半固态铸-锻6061合金成分偏析的影响[J].特种铸造及有色合金,2017,37(08):853-855.

Tan Jianbo, Li Lixin. Effects of Holding Time on Composition Segregation in Semi-solid Casting-forging 6061 Alloy[J]. Special Casting & Nonferrous Alloys, 2017,37(8):853-855.
[1]谭建波,李立新.保持时间对半固态铸-锻6061合金成分偏析的影响[J].特种铸造及有色合金,2017,37(08):853-855. DOI： 10.15980/j.tzzz.2017.08.012.

Tan Jianbo, Li Lixin. Effects of Holding Time on Composition Segregation in Semi-solid Casting-forging 6061 Alloy[J]. Special Casting & Nonferrous Alloys, 2017,37(8):853-855. DOI： 10.15980/j.tzzz.2017.08.012.

摘要

采用手工搅拌法制备了半固态6061合金

利用压力机及杯形试验模具

进行6061半固态铸-锻成形

研究了保持时间对6061半固态铸-锻成分偏析的影响。结果表明

保持时间越长

试样上部、中部、底部Si、Cu、Mg元素的含量越接近原始含量。保持时间在0、1、2s时

试样上部、中部的Si、Cu、Mg元素含量都比试样原始Si、Cu、Mg元素含量高

属于正偏析

而试样底部Si、Cu、Mg元素含量始终比试样原始Si、Cu、Mg元素含量低

为负偏析。保持时间≥3s后

试样上部、中部、底部Si、Cu、Mg元素偏析程度显著降低。

Abstract

Semi-solid 6061 alloy slurry was prepared by manual stirring

and then the semi-solid castingforging forming of 6061 alloy was carried out by using press and cup-shaped mold to analyze effects of holding time on the segregation of 6061semi-solid casting-forging components.The results reveal that with increasing in holding time

content of Si

Cu and Mg in the upper

middle and bottom of the specimen is near to the original content.With the hold time of 0s

1sand 2s

the content of Si、Cu and Mg elements is the higher than original content in the specimen of upper and middle

which is positive segregation

however

the content of Si、Cu and Mg elements is the lower than original content in the specimen of bottom

which is negative segregation.When the holding time is 3sor more

the segregation of Si

Cu and Mg elements can be decreased greatly in the upper

middle and bottom of the specimen.