Effect of Al-5Ti-1B and Sm Compound Modification on the Microstructure and Properties of ZL114 Alloy

Zheng Fangchao; Ma Baoxia; Feng Yicheng; Wang Liping; Guo Erjun

doi:10.15980/j.tzzz.2016.07.026

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Effect of Al-5Ti-1B and Sm Compound Modification on the Microstructure and Properties of ZL114 Alloy
Vol. 36, Issue 7, Pages: 758-761(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.07.026

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[1]郑方超,马宝霞,冯义成,王丽萍,郭二军.Al-5Ti-1B和Sm复合变质对ZL114合金组织及性能的影响[J].特种铸造及有色合金,2016,36(07):758-761.

Zheng Fangchao, Ma Baoxia, Feng Yicheng, et al. Effect of Al-5Ti-1B and Sm Compound Modification on the Microstructure and Properties of ZL114 Alloy. [J]. Special Casting & Nonferrous Alloys 36(7):758-761(2016)
[1]郑方超,马宝霞,冯义成,王丽萍,郭二军.Al-5Ti-1B和Sm复合变质对ZL114合金组织及性能的影响[J].特种铸造及有色合金,2016,36(07):758-761. DOI： 10.15980/j.tzzz.2016.07.026.

Zheng Fangchao, Ma Baoxia, Feng Yicheng, et al. Effect of Al-5Ti-1B and Sm Compound Modification on the Microstructure and Properties of ZL114 Alloy. [J]. Special Casting & Nonferrous Alloys 36(7):758-761(2016) DOI： 10.15980/j.tzzz.2016.07.026.

摘要

以ZL114合金为研究对象

采用Al-5Ti-1B中间合金与Sm复合变质剂对合金进行细化变质。结果表明

随着Sm加入量的增加

合金中初生α-Al相的二次枝晶臂间距、共晶Si的平均面积和平均长径比先降低后增加

抗拉强度和硬度先增加后降低。当Sm的加入量为0.07%（Al-5Ti-1B加入量固定为1%）时

细化变质效果最佳

α-Al相的二次枝晶臂间距、共晶Si的平均面积和平均长径比分别为11.24μm、3.47μm

和2.53

其抗拉强度和硬度（HV）分别为225 MPa、63.2。

Abstract

The effects of Al-6Ti-1B master alloy and Sm compound modification on microstructure and mechanical properties of ZL114 alloy were investigated.The results show that with the increase of Sm addition

the secondary dendrite arm spacing of the primaryα-Al phases

the aspect ratio of the mean area and average ratio of length to diameter of the eutectic phases are decreased firstly and then increased

while the tensile strength and hardness are increased firstly and then decreased.With the 0.07% Sm addition（Al-5Ti-1Baddition is fixed at 1%）

the refining and modifying effect exhibit desirable

where the secondary dendrite arm spacing of the primaryα-Al phases

the aspect ratio of the mean area and average ratio of length to diameter of the eutectic phases are 11.24μm

3.47μm

and 2.53

respectively

meanwhile

the tensile strength and hardness reach 225 MPa and 63.2（HV）

respectively.