冷却强度对Cu-15Ni-15Mn合金铸态组织性能的影响

蔡薇; 吴语; 李安运; 王刚; 杨胜利

doi:10.15980/j.tzzz.2013.10.029

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冷却强度对Cu-15Ni-15Mn合金铸态组织性能的影响
Influence of Cooling Intensity on Microstructure and Properties of the Cu-15Ni-15Mn Alloy
2013年33卷第10期页码：980-982
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.10.029

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[1]蔡薇,吴语,李安运,王刚,杨胜利.冷却强度对Cu-15Ni-15Mn合金铸态组织性能的影响[J].特种铸造及有色合金,2013,33(10):980-982.

Cai Wei, Wu Yu, Li Anyun, et al. Influence of Cooling Intensity on Microstructure and Properties of the Cu-15Ni-15Mn Alloy[J]. Special Casting & Nonferrous Alloys, 2013,33(10):980-982.
[1]蔡薇,吴语,李安运,王刚,杨胜利.冷却强度对Cu-15Ni-15Mn合金铸态组织性能的影响[J].特种铸造及有色合金,2013,33(10):980-982. DOI： 10.15980/j.tzzz.2013.10.029.

Cai Wei, Wu Yu, Li Anyun, et al. Influence of Cooling Intensity on Microstructure and Properties of the Cu-15Ni-15Mn Alloy[J]. Special Casting & Nonferrous Alloys, 2013,33(10):980-982. DOI： 10.15980/j.tzzz.2013.10.029.

摘要

研究了石墨型、金属型、金属型+水冷却对Cu-15Ni-15Mn合金铸态组织的影响

探讨了枝晶的形态、枝晶尺寸与合金硬度的关系。结果表明

冷却强度对Cu-15Ni-15Mn合金的晶枝尺寸及性能有明显的影响。随冷却强度的增加

一次枝晶、二次枝晶的尺寸及枝晶臂距离减小。金属型及金属型+水冷却的铸造合金一次枝晶尺寸分别为20.82和8.09μm

比石墨型分别减小了43.7%和78.1%。冷却强度的增加

有利于合金硬度的增加。金属型和金属型+水冷却合金的硬度（HV）分别为96和103

比石墨型铸锭的硬度分别提高了10%和19.8%。

Abstract

Effects of different cooling intensity

such as graphite mold

iron mold and iron mold with water cooling

on the as-cast microstructure of Cu-15Ni-15Mn alloy were investigated

and the relationship of dendrite morphology and grain size with the hardness of the alloy was described.The results show that the size of dendrite and characteristics of Cu-15Ni-15Mn alloy are closely relative with cooling intensity.With the increase of the cooling intensity

the size of primary dendrite

the secondary dendrites and the space between dendrites are decreased.The size of primary dendrite of alloy cooled in iron mold and in iron mold with water cooling reaches 20.82μm and 8.09μm

respectively

reduced by 43.7%and by78.1% respectively

comparing with that of the alloy cooled in graphite mold.It is beneficial to strengthening the hardness of alloy by increasing the cooling intensity.The hardness（HV）of alloy cooled in iron mold and in iron mold with water cooling reaches 96and103

respectively

enhanced by10%and by 19.8%

respectively

comparing with that of one in graphite mold.