热压烧结Al2O3/Fe-28Al-5Cr复合材料的组织和性能
Microstructures and Properties of Al2O3/Fe-28Al-5Cr Composites Prepared by Hot-Pressed Sintering
摘 要
在自制的Fe-28Al-5Cr合金粉中加入质量分数为10%和20%Al2O3陶瓷颗粒, 采用热压烧结技术制备了Fe-28Al-5Cr基复合材料, 研究了Al2O3加入量对复合材料组织、力学性能及高温耐磨性能的影响。结果表明: 所制备复合材料的相对密度达到99%以上, 复合材料由Fe3Al基体和Al2O3增强相组成; Al2O3在复合材料中主要分布在晶界处, 当Al2O3的加入量为20%时, 形成了连续的网状结构; 复合材料的强度比基体合金的低, 且其强度随Al2O3含量的增加而降低, 但加入20%Al2O3的复合材料的高温耐磨性能比基体合金的有明显改善。
Fe3Al基复合材料
Al2O3
热压烧结
强度
高温磨损
intermetallic compound
Fe3Al based composite
Al2O3
hot-pressed sintering
strength
high-temperature wear
Abstract
Fe-28Al-5Cr based composites were prepared by adding 10wt% and 20wt% Al2O3 ceramic particles into self-made Fe-28Al-5Cr alloy powders and following hot-pressed sintering, and the effects of Al2O3 content on microstructure, mechanical and high-temperature wear properties of the composites were studied. The results show that the relative density of the composites up to 99%, and the composites were composed of Fe3Al matrix and Al2O3 enhanced phase. Al2O3 mainly distributed at grain boundary of Fe3Al, which leaded to the formation of net-structured Al2O3 when Al2O3 adding contents reached to 20wt%. The strength of the composites was lower than that of the matrix, and it decreased with the increase of Al2O3 adding contents, but the high-temperature wear resistance of the composite with 20wt% Al2O3 was improved obviously comparing with that of the matrix.
中图分类号 TB332
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51275507; 51201172)
收稿日期 2012/8/30
修改稿日期 2013/6/20
网络出版日期
作者单位点击查看
备注徐建林(1970-), 男, 甘肃兰州人, 教授, 博士。
引用该论文: XU Jian-lin,ZHEN Qian,ZHANG Xing-hua,MA Ji-qiang,LI Fei,YANG Jun. Microstructures and Properties of Al2O3/Fe-28Al-5Cr Composites Prepared by Hot-Pressed Sintering[J]. Materials for mechancial engineering, 2013, 37(10): 34～38
徐建林,甄乾,张兴华,马吉强,李斐,杨军. 热压烧结Al2O3/Fe-28Al-5Cr复合材料的组织和性能[J]. 机械工程材料, 2013, 37(10): 34～38
被引情况:
【1】甄乾,徐建林,张兴华,马吉强,李斐,杨军, "原位反应结合热压烧结工艺制备Al2O3/Fe-28Al-5Cr复合材料的组织和性能",机械工程材料 38, 26-32(2014)
【2】高增,王西涛,牛济泰, "表面镀镍SiCp/Al复合材料与可伐合金的真空钎焊",机械工程材料 38, 20-24(2014)
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【3】STOLOFF N S. Iron aluminides: present status and future prospects[J].Materials Science and Engineering: A, 1998, 258: 1-14.
【4】ZHU S M, MAKOTO T, KAZUSHI S. Characterization of Fe3Al-based intermetallic alloys fabricated by mechanical alloying and HIP consolidation[J].Materials Science and Engineering A, 2000, 292: 83-89.
【5】范润华, 孙康宁, 尹衍升, 等.Fe3Al金属间化合物的机械合金化[J].机械工程学报, 2000, 36(8): 55-60.
【6】陆永浩, 邢志强.Fe3Al金属间化合物的回顾与展望[J].北京工业大学学报, 1996, 22(3): 131-140.
【7】LIU C T, LEE E H, MCKAMEY C G. An environmental effect as the major cause for room-temperature embrittlement in FeAl[J].Scripta Metallurgica, 1989, 23(6): 875-880.
【8】SHARMA G, LIMAYE P K, RAMANUJAN R V, et al. Dry sliding wear studies of Fe3Al-ordered intermetallic alloy[J].Materials Science and Engineering A, 2004, 386: 408-414.
【9】高小玫, 钱祥荣.Cr对Fe3Al的韧化作用[J].金属学报, 1994, 30(7): 307-310.
【10】KOCH C C. Intermetallic matrix composites prepared by mechanical alloying-a review[J].Materials Science and Engineering: A, 1998, 214: 39-48.
【11】KUMAR K S, BAO G. Intermetallic matrix composites: an review[J].Composites Science and Technology, 1994, 52: 127-150.
【12】SUBRAMANIAN R, MCKAMEY C G, SCHNEIBEL J H, et al. Iron aluminide-Al2O3 composites by in situ displacement reactions: processing and mechanical properties[J].Materials Science and Engineering A, 1998, 254: 119-128.
【13】BAI Ya-ping, XING Jian-dong, WU Hao-liang, et al. Study on preparation and mechanical properties of Fe3Al-20wt.%Al2O3 composites[J].Materials and Design, 2012, 39: 211-219.
【14】ALMAN D E, HAWK JA, TYLCZAK J H, et al. Wear of iron-aluminide intermetallic-based alloys and composites by hard particles [J].Wear, 2001, 251(1/12): 875-884.
【15】YANG Jun, LA Pei-qing, LIU Wei-min, et al. Microstructure and properties of Fe3Al-Fe3AlC0.5 composites prepared by self-propagating high temperature synthesis casting[J].Materials Science and Engineering: A, 2004, 382: 8-14.
【16】ZHANG Xing-hua, YANG Jun, MA Ji-qiang, et al. Microstructures and mechanical properties of Fe-28Al-5Cr/TiC composites produced by hot-pressing sintering[J].Materials Science and Engineering: A, 2011, 528: 6819-6824.
【17】ZHANG Xing-hua, MA Ji-qiang, YANG Jun, et al. Dry-sliding tribological behavior of Fe-28Al-5Cr/TiC composites[J].Wear, 2011, 271(5/6): 881-888.
【18】尹衍升, 李嘉, 谭训彦, 等.机械合金化—加压烧结制备Fe3Al金属间化合物[J].粉末冶金技术, 2004, 22(3): 151-155.
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