快速凝固<strong>AlCoCrFeNi<sub>2.1</sub></strong>共晶高熵合金的微观组织演变和力学性能

doi:10.11901/1005.3093.2019.069

材料研究学报

2019, Vol. 33

Issue (9): 650-658 DOI: 10.11901/1005.3093.2019.069

研究论文

本期目录 | 过刊浏览

快速凝固AlCoCrFeNi_2.1共晶高熵合金的微观组织演变和力学性能

曹雷刚¹,朱琳¹,张磊磊¹,王辉²,崔岩¹(

),杨越¹,刘峰斌¹

1. 北方工业大学机械与材料工程学院北京 100144
2. 北京科技大学新金属材料国家重点实验室北京 100083

Microstructure Evolution and Mechanical Properties of Rapid Solidified AlCoCrFeNi_2.1 Eutectic High Entropy Alloy

CAO Leigang¹,ZHU Lin¹,ZHANG Leilei¹,WANG Hui²,CUI Yan¹(

),YANG Yue¹,LIU Fengbin¹

1. School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China
2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

引用本文:

曹雷刚,朱琳,张磊磊,王辉,崔岩,杨越,刘峰斌. 快速凝固AlCoCrFeNi_2.1共晶高熵合金的微观组织演变和力学性能[J]. 材料研究学报, 2019, 33(9): 650-658.
Leigang CAO, Lin ZHU, Leilei ZHANG, Hui WANG, Yan CUI, Yue YANG, Fengbin LIU. Microstructure Evolution and Mechanical Properties of Rapid Solidified AlCoCrFeNi_2.1 Eutectic High Entropy Alloy[J]. Chinese Journal of Materials Research, 2019, 33(9): 650-658.

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摘要:

使用真空快速凝固设备制备不同直径的AlCoCrFeNi_2.1合金铸棒和薄带，研究了冷却速率对多主元共晶高熵合金的微观组织和力学性能的影响。结果表明，全部试样均由FCC和B2两相组成。不同直径的合金铸棒均为常规共晶组织，只在表层某些位置观察到胞状共晶组织。铸棒的直径越小，冷却速率越大，规则共晶组织的片间距(λ)越小，其屈服强度越高。当铸棒直径由8 mm减小至2 mm时表层区域的λ值由530.4 μm减小至357.0 μm，轴心区域的片间距由712 μm减小至474 μm，合金的屈服强度由690 MPa提高到877 MPa。结合合金薄带的微观组织分析结果表明，随着冷却速率的提高AlCoCrFeNi_2.1合金依次形成规则和非规则混合共晶组织、胞状共晶组织和树枝状组织。

关键词 ：金属材料, 共晶高熵合金, 快速凝固, 微观组织

Abstract：

Rods with different diameters and ribbons of the multi-component eutectic high-entropy alloy AlCoCrFeNi_2.1 were prepared by vacuum rapid solidification facility. The effect of cooling rate on microstructure and mechanical properties of the alloy was investigated. The results show that all of the alloys consist of FCC and B2 phases. Alloy rods of different diameters present a typical eutectic structure, with the presence of the cellular microstructure at certain sites of axial surface regions. The decrease of the diameter raises the cooling rate of the casting rod, resulting in the decrease of lamellar spacing (λ) of the regular eutectic structure and the increase of yield strength. As the diameter decreases from 8 mm to 2 mm, the values of λ decrease from 530.4 to 357.0 μm in the axial surface regions and from 712.0 μm to 474.0 μm in the axial center regions, resulting in the increase of the yield strength from 690 MPa to 877 MPa. As far as the microstructure morphology of the alloy ribbons is concerned, it can be concluded that the microstructure of the alloy may evolves in the following sequence, namely, regular and irregular eutectic structure, cellular structure and dendrite structure as the cooling rate is increased.

Key words： metallic materials eutectic high entropy alloy rapid solidification microstructure

收稿日期: 2019-01-21

ZTFLH:

TG244

基金资助:北京市自然科学基金(2194074);国家重点研发计划(2017YFB0703102);北京市教委科技一般项目(KM201910009005);北方工业大学毓青人才支持计划(18XN012-081)

作者简介: 曹雷刚，男，1985年生，博士，讲师

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https://www.cjmr.org/CN/10.11901/1005.3093.2019.069 或 https://www.cjmr.org/CN/Y2019/V33/I9/650

图1 AlCoCrFeNi2.1合金的微观组织

表1 AlCoCrFeNi2.1高熵合金的能谱分析和物相

图2 不同直径AlCoCrFeNi2.1共晶高熵合金铸棒的表层区域(左侧)和轴心区域(右侧)的微观组织形貌

表2 不同直径合金铸棒表层区域和中心区域FCC和B2相的能谱分析

图3 不同直径AlCoCrFeNi2.1高熵合金铸棒的压缩应力应变曲线

图4 不同直径AlCoCrFeNi2.1高熵合金铸棒表层和轴心区域的规则共晶组织片间距

图5 AlCoCrFeNi2.1合金薄带微观组织演变规律

图6 AlCoCrFeNi2.1薄带接触表面和自由表面的XRD物相分析

图7 AlCoCrFeNi2.1共晶高熵合金非平衡凝固微观组织的演变示意图

1	GreerA L. Confusion by design [J]. Nature, 1993, 366: 303
2	InoueA. Stabilization of metallic supercooled liquid and bulk amorphous alloys [J]. Acta Mater., 2000, 48: 279
3	InoueA, TakeuchiA. Recent progress in bulk glassy, nanoquasicrystalline and nanocrystalline alloys [J]. Mater. Sci. Eng., 2004, 375-377A: 16
4	CantorB, ChangI T H, KnightP, et al. Microstructural development in equiatomic multicomponent alloys [J]. Mater. Sci. Eng., 2004, 375-377A: 213
5	ZhangY. Amorphous and High Entropy Alloys [M]. Beijing: Science Press, 2010
5	张勇. 非晶和高熵合金 [M]. 北京: 科学出版社, 2010
6	WangJ, HuangW G. Microstructure and mechanical properties of CrMoVNbFex high-entropy alloys [J]. Chin. J. Meter. Res., 2016, 30: 609
6	王江, 黄维刚. CrMoVNbFex高熵合金微观组织结构与力学性能 [J]. 材料研究学报, 2016, 30: 609
7	NongZ S, LiH Y, WangJ J. Thermal stability of AlCrFeNiTi high entropy alloy [J]. Rare Met. Mater. Eng., 2018, 47: 191
7	农智升, 李宏宇, 王继杰. AlCrFeNiTi高熵合金热稳定性的研究 [J]. 稀有金属材料与工程, 2018, 47: 191
8	ShahmirH, MousaviT, HeJ Y, et al. Microstructure and properties of a CoCrFeNiMn high-entropy alloy processed by equal-channel angular pressing [J]. Mater. Sci. Eng., 2017, 705A: 411
9	DongY, ZhouK Y, LuY P, et al. Effect of vanadium addition on the microstructure and properties of AlCoCrFeNi high entropy alloy [J]. Mater. Des., 2014, 57: 67
10	WuX C, ZhangW Q, QinL, et al. Effects of Annealing treatment on microstructure and mechanical properties of AlCoCrFeNi high-entropy alloy [J]. Hot Work. Technol., 2015, 44(8): 220
10	吴兴财, 张伟强, 秦力等. 退火处理对AlCoCrFeNi高熵合金组织结构及性能的影响 [J]. 热加工工艺, 2015, 44(8): 220)
11	TakeuchiA, AmiyaK, WadaT, et al. High-entropy alloys with a hexagonal close-packed structure designed by equi-atomic alloy strategy and binary phase diagrams [J]. JOM, 2014, 66: 1984
12	BaoM L, QiaoJ W. Research progress of hexagonal close-packed high-entropy alloys [J]. Mater. China, 2018, 37: 264
12	鲍美林, 乔珺威. 密排六方结构高熵合金研究进展[J]. 中国材料进展, 2018, 37: 264
13	HeJ Y, LiuW H, WangH, et al. Effects of Al addition on structural evolution and tensile properties of the FeCoNiCrMn high-entropy alloy system [J]. Acta Mater., 2014, 62: 105
14	WangW R, WangW L, WangS C, et al. Effects of Al addition on the microstructure and mechanical property of AlxCoCrFeNi high-entropy alloys [J]. Intermetallics, 2012, 26: 44
15	TongC J, ChenM R, YehJ W, et al. Mechanical performance of the AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements [J]. Metall. Mater. Trans., 2005, 36A: 1263
16	MilenkovicS, CaramR. Effect of the growth parameters on the Ni-Ni3Si eutectic microstructure [J]. J. Cryst. Growth, 2002, 237-239: 95
17	LuY P, DongY, GuoS, et al. A promising new class of high-temperature alloys: eutectic high-entropy alloys [J]. Sci. Rep., 2014, 4: 6200
18	GludovatzB, HohenwarterA, CatoorD, et al. A fracture-resistant high-entropy alloy for cryogenic applications [J]. Science, 2014, 345: 1153
19	LuY P, GaoX Z, JiangL, et al. Directly cast bulk eutectic and near-eutectic high entropy alloys with balanced strength and ductility in a wide temperature range [J]. Acta Mater., 2017, 124: 143
20	JiangL, LuY P, WuW, et al. Microstructure and mechanical properties of a CoFeNi2V0.5Nb0.75 eutectic high entropy alloy in as-cast and heat-treated conditions [J]. J. Mater. Sci. Technol., 2016, 32: 245
21	DongY, JiangL, JiangH, et al. Effects of annealing treatment on microstructure and hardness of bulk AlCrFeNiMo0.2 eutectic high-entropy alloy [J]. Mater. Des., 2015, 82: 91
22	ZhouK Y, TangZ Y, LuY P, et al. Composition, microstructure, phase constitution and fundamental physicochemical properties of low-melting-point multi-component eutectic alloys [J]. J. Mater. Sci. Technol., 2017, 33: 131
23	WangW R, WangW L, YehJ W. Phases, microstructure and mechanical properties of AlxCoCrFeNi high-entropy alloys at elevated temperatures [J]. J. Alloys Compd., 2014, 589: 143
24	LiJ S, JiaW J, WangJ, et al. Enhanced mechanical properties of a CoCrFeNi high entropy alloy by supercooling method [J]. Mater. Des., 2016, 95: 183
25	WangF J, ZhangY, ChenG L, et al. Cooling rate and size effect on the microstructure and mechanical properties of AlCoCrFeNi high entropy alloy [J]. J. Eng. Mater. Technol., 2009, 131: 034501
26	Kozie?T. Estimation of cooling rates in suction casting and copper-mould casting processes [J]. Arch. Metall. Mater., 2015, 60: 767
27	WuZ W. Effect of cooling rate on the microstructure and mechanical properties of Mg-Cu-(Y) alloy [D]. Changsha: Central South University, 2007
27	吴志文. 冷却速度对Mg-Cu-(Y)合金组织及力学性能的影响 [D]. 长沙: 中南大学, 2007
28	KarpeB, KosecB, BizjakM. Analyses of the melt cooling rate in the melt-spinning process [J]. J. Achiev. Mater. Manuf. Eng., 2012, 51: 59
29	YehJ W. Recent progress in high-entropy alloys [J]. Eur. Control J., 2006, 31: 633
30	TsaiK Y, TsaiM H, YehJ W. Sluggish diffusion in Co-Cr-Fe-Mn-Ni high-entropy alloys [J]. Acta Mater., 2013, 61: 4887
31	LiQ, ChenW M, ZhongJ, et al. On sluggish diffusion in fcc Al–Co-Cr-Fe-Ni high-entropy alloys: an experimental and numerical study [J]. Metals, 2018, 8: 16
32	TanY M, LiJ S, WangJ, et al. Seaweed eutectic-dendritic solidification pattern in a CoCrFeNiMnPd eutectic high-entropy alloy [J]. Intermetallics, 2017, 85: 74
33	WangR, ChenW M, ZhongJ, et al. Experimental and numerical studies on the sluggish diffusion in face centered cubic Co-Cr-Cu-Fe-Ni high-entropy alloys [J]. J. Mater. Sci. Technol., 2018, 34: 1791
34	DivinskiS V, PokoevA V, EsakkirajaN, et al. A mystery of "sluggish diffusion" in high-entropy alloys: the truth or a myth? [J]. Diffus. Found., 2018, 17: 69
35	OsetskyY N, BélandL K, BarashevA V, et al. On the existence and origin of sluggish diffusion in chemically disordered concentrated alloys [J]. Curr. Opin. Solid State Mater. Sci., 2018, 22: 65

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