Cr对FeCoNiAlCr_x高熵合金组织与力学性能的影响
Effect of Cr on microstructure and mechanical properties of FeCoNiAlCr_x high entropy alloys
查看参考文献31篇
|
文摘
|
采用真空电弧熔炼法制备FeCoNiAlCr_x(x=0,0.2,0.4,0.6,0.8,原子比,下同)高熵合金铸锭,探究Cr含量对该合金微观结构、组织及力学性能的影响。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)对合金相结构、微观组织及成分进行分析表征;采用万能试验机对合金压缩性能进行测试。结果表明:随着Cr含量的增加,合金的微观结构由单相BCC结构转变为BCC+FCC混合结构;合金微观组织由等轴晶逐步转变为树枝晶,并且合金晶粒尺寸发生了明显细化。本实验制备的五种合金都具有较好的力学性能,合金的抗压强度随着Cr含量的增加大幅度增强,当x=0时合金抗压强度和塑性应变最低,分别为1500MPa和13.56%;当x=0.8时,合金抗压强度和塑性应变达到最大,分别为2460MPa和30.09%;合金抗压强度的增幅达64%。这表明Cr添加对FeCoNiAlCr_x高熵合金的组织细化、抗压强度和塑性的提升具有重要作用。 |
|
其他语种文摘
|
FeCoNiAlCr_x(x=0,0.2,0.4,0.6,0.8,atomic ratio)high-entropy alloy ingots were prepared by vacuum arc melting method,and the effect of Cr content on the microstructure and mechanical properties of the alloy was investigated.The phase structure,microstructure and the composition of the alloy were analyzed and characterized by X-ray diffractometer(XRD),scanning electron microscope(SEM)and energy dispersive spectrometer(EDS).The compression properties of the alloy were tested by universal testing machine.The results show that with the increase of Cr content,the microstructure of the alloy changes from a single-phase BCC structure to a BCC+FCC mixed structure;the microstructure of the alloy gradually changes from an equiaxed structure to a dendrite structure,and the grain size of the alloy is obviously refined.The five alloys prepared in this experiment have relatively good mechanical properties,and the compressive strength of the alloy increases greatly with the increase of Cr content.When x=0,the compressive strength and plastic strain of the alloy are the lowest,which are 1500MPa and 13.56%,respectively;when x=0.8,the compressive strength and plastic strain of the alloy reach the maximum,which are 2460 MPa and 30.09%,respectively;the compressive strength of the alloy increases by 64%.It indicates that Cr addition plays an important role in the microstructure refinement,the improvement of compressive strength and ductility of FeCoNiAlCr_x high-entropy alloys. |
|
来源
|
材料工程
,2023,51(2):91-97 【核心库】
|
|
DOI
|
10.11868/j.issn.1001-4381.2022.000128
|
|
关键词
|
高熵合金
;
相结构
;
显微组织
;
力学性能
;
断口形貌
;
压缩性能
|
|
地址
|
西安科技大学材料科学与工程学院, 西安, 710054
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-4381 |
|
学科
|
金属学与金属工艺 |
|
基金
|
西安科技大学优秀青年科技基金项目
;
西北工业大学凝固技术国家重点实验室开放基金
;
陕西省留学人员科技活动择优资助项目
|
|
文献收藏号
|
CSCD:7430230
|
参考文献 共
31
共2页
|
|
1.
Yeh J W. Nanostructured high-entropy alloys with multiple principal elements:novel alloy design concepts and outcomes.
Advanced Engineering Materials,2004,6(5):299-303
|
CSCD被引
1343
次
|
|
|
|
|
2.
Cantor B. Microstructural development in equiatomic multicomponent alloys.
Materials Science and Engineering:A,2004,375:213-218
|
CSCD被引
691
次
|
|
|
|
|
3.
Zhang W. Science and technology in high-entropy alloys.
Science China Materials,2018,61(1):2-22
|
CSCD被引
175
次
|
|
|
|
|
4.
Miracle D B. A critical review of high entropy alloys and related concepts.
Acta Materialia,2017,122:448-511
|
CSCD被引
580
次
|
|
|
|
|
5.
Murty B S. Alloy design and phase selection rules in high-entropy alloys.
Highentropy alloys,2019:51-79
|
CSCD被引
1
次
|
|
|
|
|
6.
Shi Y. Corrosion-resistant high-entropy alloys:a review.
Metals-Open Access Metallurgy Journal,2017,7(2):43-61
|
CSCD被引
50
次
|
|
|
|
|
7.
Guo W Q. Dislocation-induced breakthrough of strength and ductility trade-off in a non-equiatomic high-entropy alloy.
Acta Materialia,2020,185:45-54
|
CSCD被引
15
次
|
|
|
|
|
8.
Ananiadis E. AlNi-CrFeMn equiatomic high entropy alloy:a further insight in its microstructural evolution,mechanical and surface degradation response.
Metals and Materials International,2019,26(6):793-811
|
CSCD被引
2
次
|
|
|
|
|
9.
王洪伟. 非均匀组织FeMnCoCr高熵合金的微观结构和力学性能.
金属学报,2021,57(5):632-640
|
CSCD被引
9
次
|
|
|
|
|
10.
Joseph J. Understanding the mechanical behaviour and the large strength/ductility differences between FCC and BCC AlxCoCrFeNi high entropy alloys.
Journal of Alloys and Compounds,2017,726:885-895
|
CSCD被引
24
次
|
|
|
|
|
11.
陈刚. Al_(0.1)CoCrFeNi高熵合金的力学性能和变形机理.
材料工程,2019,47(1):106-111
|
CSCD被引
6
次
|
|
|
|
|
12.
Zhao C D. Optimizing mechanical and magnetic properties of AlCoCrFeNi high-entropy alloy via FCC to BCC phase transformation.
Journal of Materials Science & Technology,2021,86(27):117-126
|
CSCD被引
6
次
|
|
|
|
|
13.
Duan Y P. Microwave absorption performance of FeCoNiAlCr_(0.9) alloy powders by adjusting the amount of process control agent.
Journal of Materials Science & Technology,2021,77(18):209-216
|
CSCD被引
16
次
|
|
|
|
|
14.
吴长军. 退火温度对共晶和单相Al-Co-Cr-Fe-Ni高熵合金显微组织及硬度的影响.
常州大学学报(自然科学版),2021,33(3):1-8
|
CSCD被引
1
次
|
|
|
|
|
15.
蒋淑英. AlCoCrFeNi高熵合金铸态与退火态的耐蚀性.
稀有金属材料与工程,2018,47(10):3191-3196
|
CSCD被引
5
次
|
|
|
|
|
16.
Ma G L. Addition Al and/or Ti Induced Modifications of Microstructures, Mechanical Properties, and Corrosion Properties in CoCrFeNi High-Entropy Alloy Coatings.
Acta Metallurgica Sinica(English Letters),2021,34(8):1087-1102
|
CSCD被引
8
次
|
|
|
|
|
17.
Xiong T. Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy, AlCoCrFeNi2.1.
Journal of Materials Science & Technology,2021,65(6):216-227
|
CSCD被引
20
次
|
|
|
|
|
18.
Huang X. Effects of Homogenized Treatment on Microstructure and Mechanical Properties of AlCoCrFeNi_(2.2) Near-Eutectic High-Entropy Alloy.
Acta Metallurgica Sinica(English Letters),2021,34(8):1079-1086
|
CSCD被引
6
次
|
|
|
|
|
19.
李洪超. AlCoCrFeNi系高熵合金的强化方法研究.
材料导报,2021,35(17):17010-17018
|
CSCD被引
6
次
|
|
|
|
|
20.
蒋淑英. AlCoCrFeNi高熵合金铸态及退火态的组织和性能研究.
稀有金属,2018,42(12):1241-1246
|
CSCD被引
6
次
|
|
|
|
|
了解气象卫星更多信息，请访问