Effect of AlxCoCrFeNi High-Entropy Alloy Binder on Microstructure and High-Temperature Oxidation Resistance of Ti(C,N)-Based Cermets
-
摘要: 以AlxCoCrFeNi高熵合金（x=0，0.5，1，物质的量比）作为黏结剂，采用低压烧结法制备Ti （C，N）基金属陶瓷，研究了AlxCoCrFeNi高熵合金黏结剂对金属陶瓷微观结构和高温抗氧化性能的影响。结果表明：所制备的金属陶瓷均主要由面心立方（FCC）结构的Ti （C，N）相和FCC结构的高熵合金黏结相组成，在高温烧结时Al0.5CoCrFeNi和AlCoCrFeNi高熵合金发生了体心立方（BCC）结构相到FCC结构相的转变；金属陶瓷中均形成了典型的芯-环结构，以AlCoCrFeNi高熵合金为黏结剂制备的金属陶瓷中含有较多孔隙；在1 000℃氧化6 h后，以CoCrFeNi、Al0.5CoCrFeNi和AlCoCrFeNi高熵合金为黏结剂制备的金属陶瓷的单位面积质量增加量分别为3.58，2.95，2.81 mg·cm-2，以AlCoCrFeNi高熵合金为黏结剂制备的金属陶瓷具有最优的高温抗氧化性能。
-
关键词:
- Ti(C,N)基金属陶瓷 /
- AlxCoCrFeNi高熵合金 /
- 微观结构 /
- 高温抗氧化性能
Abstract: Ti(C, N)-based cermets were prepared by low-pressure sintering with AlxCoCrFeNi high-entropy alloy (x=0, 0.5, 1, molar ratio) as the binder, and the effects of AlxCoCrFeNi high-entropy alloy binder on the microstructure and high-temperature oxidation resistance of cermets were investigated. The results show that the prepared cermets were mainly composed of Ti(C, N) phase with face-centered cubic (FCC) structure and high-entropy alloy binder phase with FCC structure, and the transformation from body-centered cubic (BCC) structure phase to FCC structure phase occurred in Al0.5CoCrFeNi and AlCoCrFeNi high-entropy alloys during high-temperature sintering. The cermets all had a typical core-ring structure, and there were more pores in the cermets prepared with AlCoCrFeNi high-entropy alloy binder. After oxidizing at 1 000℃ for 6 h, the mass gains per unit area of cermets prepared with CoCrFeNi, Al0.5CoCrFeNi, and AlCoCrFeNi high-entropy alloy binders were 3.58, 2.95, 2.81 mg·cm-2, respectively, and the cermets prepared with AlCoCrFeNi high-entropy alloy binder had the best high-temperature oxidation resistance. -
-
[1] LIU N,CHAO S,YANG H D.Cutting performances,mechanical property and microstructure of ultra-fine grade Ti(C,N)-based cermets[J].International Journal of Refractory Metals and Hard Materials,2006,24(6):445-452.
[2] YANG S D,XIONG J,GUO Z X,et al.Effects of CrMnFeCoNi additions on microstructure,mechanical properties and wear resistance of Ti(C,N)-based cermets[J].Journal of Materials Research and Technology,2022,17:2480-2494.
[3] MANOJ KUMAR B V,KUMAR J R,BASU B.Crater wear mechanisms of TiCN-Ni-WC cermets during dry machining[J].International Journal of Refractory Metals and Hard Materials,2007,25(5/6):392-399.
[4] CHICARDI E,CÓRDOBA J M,GOTOR F J.High temperature oxidation resistance of (Ti,Ta)(C,N)-based cermets[J].Corrosion Science,2016,102:125-136.
[5] YEH J W,CHEN S K,LIN S J,et al.Nanostructured high-entropy alloys with multiple principal elements:Novel alloy design concepts and outcomes[J].Advanced Engineering Materials,2004,6(5):299-303.
[6] CANTOR B.Multicomponent high-entropy cantor alloys[J].Progress in Materials Science,2021,120:100754.
[7] 曾聪,何文,艾云龙,等.高熵合金研究概况[J].材料热处理学报,2020,41(12):37-48. ZENG C,HE W,AI Y L,et al.Research overview of high entropy alloy[J].Transactions of Materials and Heat Treatment,2020,41(12):37-48.
[8] MIRACLE D B.High entropy alloys as a bold step forward in alloy development[J].Nature Communications,2019,10:1805.
[9] GEORGE E P,CURTIN W A,TASAN C C.High entropy alloys:A focused review of mechanical properties and deformation mechanisms[J].Acta Materialia,2020,188:435-474.
[10] TANG C C,SHI H,JIANU A,et al.High-temperature oxidation of AlCrFeNi-(Mn or Co) high-entropy alloys:Effect of atmosphere and reactive element addition[J].Corrosion Science,2021,192:109809.
[11] WANG W R,WANG W L,YEH J W.Phases,microstructure and mechanical properties of AlxCoCrFeNi high-entropy alloys at elevated temperatures[J].Journal of Alloys and Compounds,2014,589:143-152.
[12] YANG T F,XIA S Q,LIU S,et al.Effects of Al addition on microstructure and mechanical properties of AlxCoCrFeNi high-entropy alloy[J].Materials Science and Engineering:A,2015,648:15-22.
[13] LU J,LI L,ZHANG H,et al.Oxidation behavior of gas-atomized AlCoCrFeNi high-entropy alloy powder at 900-1100℃[J].Corrosion Science,2021,181:109257.
[14] ZHU G,LIU Y,YE J W.Early high-temperature oxidation behavior of Ti(C,N)-based cermets with multi-component AlCoCrFeNi high-entropy alloy binder[J].International Journal of Refractory Metals and Hard Materials,2014,44:35-41.
[15] OGURA M,FUKUSHIMA T,ZELLER R,et al.Structure of the high-entropy alloy AlxCrFeCoNi:FCC versus BCC[J].Journal of Alloys and Compounds,2017,715:454-459.
[16] GUO S,NG C,LU J A,et al.Effect of valence electron concentration on stability of FCC or BCC phase in high entropy alloys[J].Journal of Applied Physics,2011,109(10):103505.
[17] JI W,FU Z Y,WANG W M,et al.Mechanical alloying synthesis and spark plasma sintering consolidation of CoCrFeNiAl high-entropy alloy[J].Journal of Alloys and Compounds,2014,589:61-66.
[18] PENG Y,MIAO H Z,PENG Z J.Development of TiCN-based cermets:Mechanical properties and wear mechanism[J].International Journal of Refractory Metals and Hard Materials,2013,39:78-89.
[19] LUO W Y,LIU Y Z,TU C.Wetting behaviors and interfacial characteristics of molten AlxCoCrCuFeNi high-entropy alloys on a WC substrate[J].Journal of Materials Science & Technology,2021,78:192-201.
[20] HE L,GAO Y M,LI Y F,et al.An effective way to solve the abnormal oxidation behavior of Fe in Ti(C,N)-304ss cermet[J].Corrosion Science,2019,155:164-172.
[21] LI Z J,LIU X Q,GUO K K,et al.Microstructure and properties of Ti(C,N)-TiB2-FeCoCrNiAl high-entropy alloys composite cermets[J].Materials Science and Engineering:A,2019,767:138427.
[22] DING Z Y,CAO B X,LUAN J H,et al.Synergistic effects of Al and Ti on the oxidation behaviour and mechanical properties of L12-strengthened FeCoCrNi high-entropy alloys[J].Corrosion Science,2021,184:109365.
计量
- 文章访问数: 7
- HTML全文浏览量: 0
- PDF下载量: 5
下载:
