AlCrFeNi多主元高熵合金的高温性能
High Temperature Property of AlCrFeNi Multi-principal Element High Entropy Alloy
摘 要
用真空熔炼法制备了AlCrFeNi多主元高熵合金, 利用光学显微镜、X射线衍射仪、扫描电子显微镜等研究了AlCrFeNi合金铸态及经不同工艺热处理后的组织, 并对合金进行了高温拉伸及蠕变试验。结果表明: 该合金在铸态下是由白色的α-(Cr, Fe)和灰色的NiAl相构成, 呈BCC结构的共晶组织, 硬度为411.3 HV; 随着热处理温度(900～1 200 ℃)的升高, 合金两相结构没有变化, 晶粒略有长大, 具有较好的高温组织稳定性; 700 ℃高温短时拉伸和蠕变试样断口均呈现出沿晶断裂和韧性断裂的混合断口特征, 拉伸时该合金的伸长率和断面收缩率分别为30.6％,41.0％, 具有较好的高温塑性。
共晶组织
组织稳定性
高温性能
muti-principal element alloy
eutectic structure
structure stability
high temperature property
Abstract
The AlCrFeNi multi-principal element alloy was prepared using vacuum smelting method. Then the microstructure of alloy after casting and different heat treatments was studied through optical microscopy, X-ray diffraction, scanning electron microscopy. And high temperature tensile test and high temperature creep test for the alloy were performed. The results show the cast alloy was consisted of a white α-(Cr,Fe) phase and gray NiAl phase, showing eutectic structure with BCC structure. And its hardness was 411.3 HV. With the heat treatment temperature (900-1 200 ℃) increasing, there was no change of two-phase structure of the alloy, but grains grew up slightly, so this alloy had better structure stability at high temperature. At 700 ℃ both high temperature short time tensile and creep fractures of the alloy displayed a mixing characteristic of intergranular fracture and ductile fracture. The alloy had good plasticity, whose tensile elongation and area reduction rate were 30.6%, 41.0%, respectively.
中图分类号 TG113
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(51171037); 国家自然科学基金-神华集团“煤炭联合基金”资助项目(51134013)
收稿日期 2012/12/5
修改稿日期 2013/11/22
网络出版日期
作者单位点击查看
备注尚建路(1988-), 女, 河南南阳人, 硕士研究生。
引用该论文: SHANG Jian-lu,CHENG Cong-qian,WANG Rui,ZHU Zhi-chao,ZHAO Jie. High Temperature Property of AlCrFeNi Multi-principal Element High Entropy Alloy[J]. Materials for mechancial engineering, 2014, 38(2): 72～75
尚建路,程从前,王锐,祝志超,赵杰. AlCrFeNi多主元高熵合金的高温性能[J]. 机械工程材料, 2014, 38(2): 72～75
被引情况:
【1】唐群华,戴品强,花能斌, "Al0.3CoCrFeNi纳米晶高熵合金在碱性溶液中的电化学性能",机械工程材料 39, 1-4(2015)
【2】饶湖常,戴品强,陈鼎宁,王乾廷, "碳含量对FeCoCrNiMnCx高熵合金显微组织与性能的影响",机械工程材料 40, 76-80(2016)
【3】霍文燚,时海芳,张竞元, "氩弧熔覆TiCrCuFeNi高熵合金涂层的组织与性能",机械工程材料 38, 61-64(2014)
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】黄乾尧, 李汉康.高温合金［M］.北京:冶金工业出版社, 2000:4-5.
【2】刘泽, 吴忠艺, 熊凯, 等.新型多元高熵合金的研究与进展［J］.大众科技, 2009(5): 139-140.
【3】TONG C J, CHEN M R, CHEN S K, et al. Mechanical performance of the AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements［J］ .Metallurgical and Materials Transaction:A,2005,36(5):1263-1271.
【4】ZHOU Y J, ZHANG Y, WANG Y L, et al. Solid solution alloy of AlCoCrFeNiTix with excellent room-temperature mechanical properties［J］.Applied Physics Letter,2007,90:181904-181907.
【5】肖旋, 郭建亭,于海朋. NiAl(Ti)-Cr(Mo)共晶合金的微观组织和力学性能［J］.金属学报.2006, 42(10):1031-1035.
【6】WANG Y P, LI B S, FU H Z. Solid solution or intermetallic in a high-entropy alloy［J］.Advanced Engineering Materials,2009,11(8):641-644.
【2】刘泽, 吴忠艺, 熊凯, 等.新型多元高熵合金的研究与进展［J］.大众科技, 2009(5): 139-140.
【3】TONG C J, CHEN M R, CHEN S K, et al. Mechanical performance of the AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements［J］ .Metallurgical and Materials Transaction:A,2005,36(5):1263-1271.
【4】ZHOU Y J, ZHANG Y, WANG Y L, et al. Solid solution alloy of AlCoCrFeNiTix with excellent room-temperature mechanical properties［J］.Applied Physics Letter,2007,90:181904-181907.
【5】肖旋, 郭建亭,于海朋. NiAl(Ti)-Cr(Mo)共晶合金的微观组织和力学性能［J］.金属学报.2006, 42(10):1031-1035.
【6】WANG Y P, LI B S, FU H Z. Solid solution or intermetallic in a high-entropy alloy［J］.Advanced Engineering Materials,2009,11(8):641-644.
相关信息
