微合金化对原位合成(Al2O3+Al3Zr)p/A356复合材料显微组织与力学性能的影响
Effect of Micro-alloying on Microstructure and Mechanical Properties of In-Situ Synthesized (Al2O3+Al3Zr)p/A356 Composites
摘 要
采用微合金化和熔体原位合成法制备了(Al2O3+Al3Zr)p/A356复合材料,研究了微合金化对复合材料显微组织和力学性能的影响.结果表明:微合金化后复合材料中Al2O3和Al3Zr的尺寸更加细小,在0.5～2 μm之间,分布更加均匀,颗粒形貌趋于球形,周边圆滑;其力学性能较未添加合金元素的复合材料有明显提高;当添加0.2%Mn+0.2%Cr+0.3%RE时,复合材料的抗拉强度、屈服强度和伸长率达到379 MPa,297 MPa和7.5%,分别提高了32.5%,37.5%和59.5%;其断裂形式属韧性断裂;其强化机制主要有Orwan强化、细晶强化、固溶强化和位错强化.
铝基复合材料
原位合成
力学性能
micro-alloying
aluminum matrix composite
in-situ synthesis
mechanical property
Abstract
(Al2O3＋Al3Zr)p/A356 composites were synthesized by micro-alloying and melt in-situ reaction technology.The effect of micro-alloying on microstructure and mechanical properties of the composites was investigated.The results indicate that the reinforced particulates Al2O3 and Al3Zr of the composites after alloying became smaller with the size at about 0.5-2 μm,the distribution became more homogeneous,the morphology became spherical and the surrounding was blunt.The mechanical properties of the composites were greatly enhanced,compared with that of the composites without alloying element addition.The tensile strength,yield strength and elongation of the (Al2O3+Al3Zr)p/A356 composites reached 379 MPa,297 MPa and 7.6%,which increased 325%,37.5% and 59.5% respectively,after 0.2wt%Mn,0.2wt%Cr and 0.3wt%RE were added.The fracture of the composites was ductile fracture.The strengthening mechanisms included Orowan strengthening,grain-refined strengthening,solid-solution strengthening and dislocation strengthening.
中图分类号 TB331
所属栏目 新材料 新工艺
基金项目 国家“863”高新技术研究发展计划资助项目(2007AA03Z5481);江苏省六大人才高峰项目(06-D-021);江苏省科技成果转化项目(BA2005054);江苏省高技术研究项目(BG2005026);教育部科技研究重点项目 (2070381)
收稿日期 2008/12/15
修改稿日期 2009/7/30
网络出版日期
作者单位点击查看
备注汪长勤(1983-),男,江苏淮安人,硕士研究生.
引用该论文: WANG Chang-qin,ZHAO Yu-tao,ZHANG Song-li,CHEN Gang,SUN Hong-qiang. Effect of Micro-alloying on Microstructure and Mechanical Properties of In-Situ Synthesized (Al2O3+Al3Zr)p/A356 Composites[J]. Materials for mechancial engineering, 2010, 34(1): 33～37
汪长勤,赵玉涛,张松利,陈刚,孙洪强. 微合金化对原位合成(Al2O3+Al3Zr)p/A356复合材料显微组织与力学性能的影响[J]. 机械工程材料, 2010, 34(1): 33～37
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参考文献
【1】宋伟.金属基复合材料的发展与应用[J].铸造设备研究,2004(5):48-50.
【2】韩海军.金属基复合材料的研究现状[J].科技情报开发与经济,2005,15(19):171-172.
【3】UNGAR T.Dislocation densities,arrangements and character from X-ray diffraction experiments[J].Mater Sci Eng A,2001,309/310:14-22.
【4】赵玉涛,孙国雄.Al-ZrClO2体系原位生成Al3Zr的孪晶生长[J].材料研究学报,2001,15(4):420-424.
【5】孙洪强.微合金化与原位颗粒协同作用铝基复合材料的组织与性能[D].镇江:江苏大学,2007:19-21.
【6】章照,赵玉涛,程晓农,等.Al-Zr-B体系反应合成复合材料的组织和性能[J].特种铸造及有色合金,2006,26(8):512-516.
【7】李斗星,周朝霞.通过基体合金化制备界面相容的Al2O3/Al颗粒增强铝基复合材料[J].金属学报,2002,38(6):602-608.
【8】ZHANG Yi-jie,MA Nai-heng,WANG Hao-wei,et al.Effect of Ti and Mg on the damping behavior of in situ aluminum composites[J].Materials Letters,2005,59:3775-3778.
【9】BEFFORT O,LONG Si-yuan.Alloying effects on microstructure and mechanical properties of high volume fraction SiC-particle reinforced Al-MMCs made by squeeze casting infiltration[J].Composites Science and Technology,2007,67:737-745.
【10】张松利.物理场下原位合成铝基复合材料的微结构与性能[D].镇江:江苏大学,2007:1-30.
【11】STOLZ U K,TENY B S.Phase equilibrium of aluminum–rich Al-Ti-B alloys-solubility of TiB2 in aluminum metals[J].Aluminum,1995(3):350-355.
【12】贺永东,张新明.微量Cr、Mn、Ti、Zr细化7A55铝合金铸锭组织的效果与机理[J].中国有色金属学报,2005,15(10):1594-1601.
【13】赵玉涛,孙建祥,戴起勋,等.Al-Zr(CO3)2体系反应合成复合材料的反应机制及动力学模型[J].中国有色金属学报,2005,15(9):1343-1349.
【14】段海丽,张恒华,邵光杰.镧对A356铝合金变质及其机制研究[J].中国稀土学报,2005,23:94-98.
【15】张树瑜,柴跃生.原位TiB2/Al复合材料形核机制[J].特种铸造及有色合金,2004(4):6-9.
【16】ZHAO Yu-tao,ZHANG Song-li,CHEN G,et al.In situ (Al2O3+Al3Zr)np/Al nanocomposites synthesized by magneto-chemical melt reaction[J].Composites Science and Technology,2008,68:1463-1470.
【2】韩海军.金属基复合材料的研究现状[J].科技情报开发与经济,2005,15(19):171-172.
【3】UNGAR T.Dislocation densities,arrangements and character from X-ray diffraction experiments[J].Mater Sci Eng A,2001,309/310:14-22.
【4】赵玉涛,孙国雄.Al-ZrClO2体系原位生成Al3Zr的孪晶生长[J].材料研究学报,2001,15(4):420-424.
【5】孙洪强.微合金化与原位颗粒协同作用铝基复合材料的组织与性能[D].镇江:江苏大学,2007:19-21.
【6】章照,赵玉涛,程晓农,等.Al-Zr-B体系反应合成复合材料的组织和性能[J].特种铸造及有色合金,2006,26(8):512-516.
【7】李斗星,周朝霞.通过基体合金化制备界面相容的Al2O3/Al颗粒增强铝基复合材料[J].金属学报,2002,38(6):602-608.
【8】ZHANG Yi-jie,MA Nai-heng,WANG Hao-wei,et al.Effect of Ti and Mg on the damping behavior of in situ aluminum composites[J].Materials Letters,2005,59:3775-3778.
【9】BEFFORT O,LONG Si-yuan.Alloying effects on microstructure and mechanical properties of high volume fraction SiC-particle reinforced Al-MMCs made by squeeze casting infiltration[J].Composites Science and Technology,2007,67:737-745.
【10】张松利.物理场下原位合成铝基复合材料的微结构与性能[D].镇江:江苏大学,2007:1-30.
【11】STOLZ U K,TENY B S.Phase equilibrium of aluminum–rich Al-Ti-B alloys-solubility of TiB2 in aluminum metals[J].Aluminum,1995(3):350-355.
【12】贺永东,张新明.微量Cr、Mn、Ti、Zr细化7A55铝合金铸锭组织的效果与机理[J].中国有色金属学报,2005,15(10):1594-1601.
【13】赵玉涛,孙建祥,戴起勋,等.Al-Zr(CO3)2体系反应合成复合材料的反应机制及动力学模型[J].中国有色金属学报,2005,15(9):1343-1349.
【14】段海丽,张恒华,邵光杰.镧对A356铝合金变质及其机制研究[J].中国稀土学报,2005,23:94-98.
【15】张树瑜,柴跃生.原位TiB2/Al复合材料形核机制[J].特种铸造及有色合金,2004(4):6-9.
【16】ZHAO Yu-tao,ZHANG Song-li,CHEN G,et al.In situ (Al2O3+Al3Zr)np/Al nanocomposites synthesized by magneto-chemical melt reaction[J].Composites Science and Technology,2008,68:1463-1470.
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