粉末触变成形制备SiC<sub>p</sub>/Al基复合材料的组织和力学性能

李普博; 陈体军; 张学拯; 秦亚红; 秦贺

doi:10.15980/j.tzzz.2016.02.007

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粉末触变成形制备SiC_p/Al基复合材料的组织和力学性能
Microstructure and Mechanical Properties of SiC_p/Al Matrix Composites Prepared by Powder Thixoforming
2016年36卷第2期页码：137-140
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.02.007

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[1]李普博,陈体军,张学拯,秦亚红,秦贺.粉末触变成形制备SiC_p/Al基复合材料的组织和力学性能[J].特种铸造及有色合金,2016,36(02):137-140.

Li Pubo, Chen Tijun, Zhang Xuezheng, et al. Microstructure and Mechanical Properties of SiC_p/Al Matrix Composites Prepared by Powder Thixoforming[J]. Special Casting & Nonferrous Alloys, 2016,36(2):137-140.
[1]李普博,陈体军,张学拯,秦亚红,秦贺.粉末触变成形制备SiC_p/Al基复合材料的组织和力学性能[J].特种铸造及有色合金,2016,36(02):137-140. DOI： 10.15980/j.tzzz.2016.02.007.

Li Pubo, Chen Tijun, Zhang Xuezheng, et al. Microstructure and Mechanical Properties of SiC_p/Al Matrix Composites Prepared by Powder Thixoforming[J]. Special Casting & Nonferrous Alloys, 2016,36(2):137-140. DOI： 10.15980/j.tzzz.2016.02.007.

摘要

提出了一种粉末冶金和触变成形相结合的粉末触变成形新技术。研究了SiC

增强的Al-Cu-Mg合金复合材料的组织和力学性能

并与基体合金进行了对比。运用电化学溶解得到了SiC

/Al复合材料的界面反应产物

并通过原位拉伸试验研究了裂纹扩展的方式。结果表明

复合材料的抗拉强度提高

伸长率降低;界面产物为MgAl

;裂纹扩展路径伴随着SiC

的添加而发生改变。

Abstract

A novel technology of powder thixoforming for preparing the particle-reinforced aluminum matrix composites in semi-solid state was proposed based on powder metallurgy and thixoforming.The microstructure and mechanical properties of the SiC particle reinforced Al-Cu-Mg alloy composite were investigated

which was compared with those of the matrix alloy.Electrochemical dissolution was employed to obtain the interfacial reaction products.The in-situ tension under scanning electron microscope was used to observe the cracking propagation.The results indicate that the ultimate tensile strength of the thixoforged composites is improved apparently while the elongation is decreased.The interfacial product is MgAl

.The crack propagation path during tensile testing is different in thixoforged composites and matrix alloy.

关键词

粉末触变电化学溶解原位拉伸裂纹扩展Al-Cu-Mg合金

Keywords

Powder ThixoformingElectrochemical DissolutionIn-situ TensionCracking PropagationAl-Cu-Mg Alloy

references

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冷速对Al-4.29Cu-1.09Mg合金凝固组织的影响

预变形对Al-4.5Cu-0.8Mg合金组织和性能影响

粉末触变成形制备SiCp/Al基复合材料的组织和力学性能

Microstructure and Mechanical Properties of SiCp/Al Matrix Composites Prepared by Powder Thixoforming

DOI： 10.15980/j.tzzz.2016.02.007

摘要

Abstract

关键词

Keywords

references

粉末触变成形制备SiC_p/Al基复合材料的组织和力学性能

Microstructure and Mechanical Properties of SiC_p/Al Matrix Composites Prepared by Powder Thixoforming