铝锌镁铜锆系铝合金的热压烧结及其性能
Hot-press Sintering and Properties of Al-Zn-Mg-Cu-Zr Aluminium Alloy
摘 要
以金属粉体为原料, 采用热压烧结技术在不同温度下烧结制备了铝锌镁铜锆系铝合金, 并测试和分析了其密度、物相、显微组织以及力学性能。结果表明: 随着烧结温度的升高, 铝合金的气孔率降低, 致密度上升, 组织更均匀, 性能更优异; 当烧结温度为600 ℃时, 气孔率低至0.01%, 接近全致密, 铝合金的合金化良好, 显微硬度达到174 HV, 抗拉强度达到502 MPa; 采用热压烧结技术可以获得高致密度、组织均匀、力学性能良好的铝合金。
热压烧结
抗拉强度
aluminium alloy
hot-pressing sintering
tensile strength
Abstract
Using metal powder as raw material, Al-Zn-Mg-Cu-Zr aluminium alloys were prepared by hot-press sintering technology at different sintering temperatures. The density, phase, microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr aluminium alloy specimens were measured. The results show that with the increase of sintering temperature, the porosity of the aluminium alloy decreased, but density increased, and the alloy had more homogeneous microstructure and better properties. When the sintering temperature was 600 ℃, the porosity was 0.01%, the aluminium alloy was close to completely dense and had a good degree of alloying. The maximum value of the average micro-hardness and tensile strength of the Al-Zn-Mg-Cu-Zr aluminium alloy specimen hit 174 HV and 502 MPa, respectively. The aluminium alloy with a high density, uniform structure and good mechanical property can be prepared by the hot-press sintering technology.
中图分类号 TG146.2
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51202175); 湖北省自然科学基金资助项目(2011CDB245)
收稿日期 2012/8/6
修改稿日期 2013/6/19
网络出版日期
作者单位点击查看
备注方攀(1991-), 男, 湖北汉川人, 本科生。
引用该论文: FANG Pan,LI Cheng-zhang,WU Chuan-dong,LUO Guo-qiang,SHEN Qiang,ZHANG Lian-meng. Hot-press Sintering and Properties of Al-Zn-Mg-Cu-Zr Aluminium Alloy[J]. Materials for mechancial engineering, 2013, 37(8): 15～18
方攀,李成章,吴传栋,罗国强,沈强,张联盟. 铝锌镁铜锆系铝合金的热压烧结及其性能[J]. 机械工程材料, 2013, 37(8): 15～18
被引情况:
【1】李 慧,陈 涛,赵路远,黄 俊,吴玉程, "T651态7075铝合金的显微组织与拉伸断裂机制",机械工程材料 40, 38-43(2016)
【2】回丽,朱永辉,李红,曾元松,王磊, "T7951二次时效对7055铝合金疲劳裂纹扩展行为的影响",机械工程材料 39, 10-13(2015)
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【3】SENKOV O N, BHAT R B, SENKOVA S V, et al. Effect of Sc and heat treatment on microstructure and properties of a 7xxx DC cast alloy[C]// proceedings of the International Conference on Aluminum Alloys (ICAA9). Brisbane, Australia: AEROJET SACRAMENTO CA, 2004.
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【5】MARTIN J M, CASTOR F. Liquid phase sintering of P/M aluminium alloy: effect of processing conditions[J].J Materials Processing Technology, 2003, 143/144: 814-821.
【6】宋仁国.高强度铝合金的研究现状及发展趋势[J].材料导报, 2000, 14(1): 20-21.
【7】WEI Q, XIONG B Q, ZHANG Y A Production of high strength Al-Zn-Mg-Cu alloy by spray forming process[J].Trans Nonferrous Met Soc China, 2001, 11(2): 258-260.
【8】XIONG B Q. Present situation and development of spray forming technology[J].Chin J Rare Mater, 1999, 11(6): 427-435.
【9】JUAREZ-ISLAS J A, PEREZ R. Microstructural and mechanical evaluations of spray-deposited 7XXX Al-alloy after conventional consolidation[J].Mater Sci Eng: A, 1994, 179/180: 614-618.
【10】王洪斌, 黄进峰, 杨滨.Al-Zn-Mg-Cu系超高强度铝合金的研究现状与发展趋势[J].材料导报, 2003, 17(9): 1-4.
【11】张春芝, 边秀房.粉末冶金铝合金的研究现状和发展趋势[J].特种铸造及有色合金, 2008 (增1): 55-58.
【12】朱平, 张力宁.粉末冶金铝合金[J].粉末冶金技术, 1994, 12(1): 50-56.
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【14】杨伏良, 甘卫平.快速凝固/粉末冶金制备高硅铝合金材料的组织与力学性能[J].中南有色金属学报, 2004, 14(10): 1716-1722.
【15】马瑞, 周娟, 肖于德.两种方法制备高强铝合金的组织和力学性能对比[J].轻合金加工技术, 2010, 38(10): 51-54.
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【21】班春燕, 巴启先, 朱丽颖.交流磁场下7075铝合金液相线和固相线温度变化[J].东北大学学报: 自然科学版, 2003, 24(5): 482-485.
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【23】汤春峰, 曲选辉, 王天剑.超固相液相烧结GH4049粉末合金[J].粉末冶金技术, 2007, 25(2): 104-108.
【24】SHANKAR J, UPADHYAYA A, BALASUBRAMANIAM R. Corrosion behavior of sintered oxide dispersion strengthened stainless[J].Journal of Materials Science, 2004, 39: 1815-1817.
【25】GERMAN R M. Rheological model for viscous flow densification during supersolidous liquid phase sintering[J].Science of Sintering, 2006, 38: 27-40.
【26】范景莲.粉末增塑近净成形技术及致密化基础理论[M].北京: 冶金工业出版社, 2011: 122-123.
【27】LIU J, LAL A, GERMAN R M. Densification and shape retention in supersolidus liquid phase sintering[J].Acta Materialia, 1999, 47(18): 4615-4626.
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