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昆明冶金高等专科学校学报 ›› 2018, Vol. 34 ›› Issue (3): 1-6.DOI: 10.3969/j.issn.1009-0479.2018.03.001

• 冶金技术与材料 •    下一篇

气孔结构对GASAR多孔Cu-Cr合金压缩性能的影响

宋群玲,杨志鸿,李瑛娟,滕 瑜,张金梁,马 娟   

  1. 昆明冶金高等专科学校a.冶金材料学院;b.测绘学院,云南 昆明 650033
  • 收稿日期:2018-06-11 出版日期:2018-06-30 发布日期:2018-06-30
  • 作者简介:宋群玲(1978-),女,河南周口人,副教授,工学博士,主要从事定向凝固、多孔材料研究。
  • 基金资助:
    国家自然科学基金项目:连铸规则多孔铜合金的基体-气孔协同定向生长机制(51164018);
    云南省教育厅基金项目:藕状多孔铜及合金的连铸法制备及其性能研究(2012Y337)。

Effect of Porous Structure on Compression Property of GASARP Porous Cu-Cr Alloys

SONGQunling,YANGZhihong,LIYingjuan,TENGYu,ZHANGJinliang,MAJuan   

  1. a.Faculty of Metallurgy and Materials Engineering;
    b.Faculty of Surveying and Mapping Engineering,Kunming Metallurgy College,Kunming 650033,China
  • Received:2018-06-11 Online:2018-06-30 Published:2018-06-30

摘要: 研究了合金化、气孔率及气孔直径对GASAR多孔Cu-Cr合金压缩性能的影响。结果表明:随气孔率增加,多孔Cu和Cu-Cr合金的压缩性降低,屈服强度、单位体积吸收能降低,密实化初始应变值增大,压缩试样可承受的应力值减小,越容易发生塑性变形;Cr合金化可明显提高多孔Cu-Cr合金的压缩性能,与多孔Cu相比,多孔Cu-1.3Cr合金屈服强度值从13MPa提高到32MPa。多孔Cu-0.8Cr合金的压缩性能随气孔直径增加而降低,气孔直径增加,屈服强度、单位体积吸收能降低,对应应力值减小,越容易发生塑性变形。

关键词: GASAR, Cu-Cr合金, 气孔率, 气孔直径, 压缩性能

Abstract: The effects of chromium  content,porosity and pore diameter on tensile property of GASAR porous Cu-Cr alloy were investigated.The results show that with the increase of porosity,the compression property of porous Cu and Cu-Cr alloys decreases,the yield strength and absorbed energy decrease,and the densification strain increases.The less the stress value of the compressed sample,the more easily plastic deformation could occur.Cr alloying can significantly improve the compressive properties of porous Cu-Cr alloys.Compared with porous Cu,the yield strength of porous Cu-1.3Cr alloys increases from 13 MPa to 32 MPa.The compressive properties of porous Cu-0.8Cr alloy decreases with the increase of pore diameter,and the yield strength and absorption energy decreases,then the plastic deformation is more likely to occur.

Key words: GASAR, Cu-Cr alloy, porosity, pore diameter, compression property

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