Effect of B on microstructure and hardness of FeCoCrNiSiBx high entropy alloy laser clad coating

doi:10.13251/j.issn.0254-6051.2020.10.036

Abstract

Abstract: FeCoCrNiSiB_x high-entropy alloy coating was prepared by laser cladding. The influence of trace boron element (molar ratio x=0, 0.02, 0.04, 0.06, 0.08) on the structure and hardness of FeCoCrNiSiB_x high-entropy alloy coating was study by using optical microscope, scanning electron microscopy, X-ray diffractometer and microhardness tester. The results indicate that the microstructure of FeCoCrNiSi high-entropy alloy coating can be mainly characterized by cellular. The addition of B promoted the formation of dendrites, resulting in fish-bone dendrites. However, the excessive content of B destroies the integrity of dendrites, leading to worm-like dendrite. In addition, the microstructure of the coating is composed of FCC and BCC phases. The addition of B element promotes the precipitation of Cr₂B particles of size 0.1-2.6 μm, which contributes the improvement of hardness of the clad coating. When the molar ratio of B is 0.06, the value of microhardness of the clad coating is highest as about 537 HV0.2.

Key words: high entropy alloy coating, laser cladding, B element, microstructure, hardness

CLC Number:

TG174

Zhao Longzhi, Yu Shihao, Zhao Mingjuan, Tang Yanchuan, Jiao Haitao, Li Jin, Song Lijun. Effect of B on microstructure and hardness of FeCoCrNiSiB_x high entropy alloy laser clad coating[J]. Heat Treatment of Metals, 2020, 45(10): 187-190.

References

[1]Qiu X W, Wu M J, Liu C G, et al. Corrosion performance of Al₂CrFeCo_xCuNiTi high-entropy alloy coatings in acid liquids[J]. Journal of Alloys and Compounds, 2017, 708: 353-357.
[2]Zhou R, Liu Y, Zhou C, et al. Microstructures and mechanical properties of C-containing FeCoCrNi high-entropy alloy fabricated by selective laser melting[J]. Intermetallics, 2018, 94: 165-171.
[3]Praveen S, Kim H S. High-entropy alloys: Potential candidates for high-temperature applications-an overview[J]. Advanced Engineering Materials, 2017: 1700645.
[4]吴波, 赵春凤, 杨上金, 等. AlCoCrFeNiTi_0.5高熵合金的高温氧化行为[J]. 稀有金属材料与工程, 2015, 44(12): 3228-3233.
Wu Bo, Zhao Chunfeng, Yang Shangjin, et al. Oxidation behavior of AlCoCrFeNiTi_0.5 high-entropy alloy at high temperature[J]. Rare Metal Materials and Engineering, 2015, 44(12): 3228-3233.
[5]Zhang H, He Y, Pan Y. Enhanced hardness and fracture toughness of the laser-solidified FeCoNiCrCuTiMoAlSiB_0.5 high-entropy alloy by martensite strengthening[J]. Scripta Materialia, 2013, 69(4): 342-345.
[6]黄灿, 杜翠薇, 代春朵, 等. 高熵合金涂层的研究进展[J]. 表面技术, 2019, 48(11): 15-22.
Huang Can, Du Cuiwei, Dai Chunduo, et al. Research progress of high-entropy alloy coatings[J]. Surface Technology, 2019, 48(11): 15-22.
[7]Guo Y, Shang X, Liu Q. Microstructure and properties of in-situ TiN reinforced laser cladding CoCr2FeNiTi_x high entropy alloy composite coatings[J]. Surface and Coatings Technology, 2018, 344: 353-358.
[8]贺星, 王晶, 孔德军, 等. TiC对激光熔覆TiC-Ti-Al涂层结构与性能的影响[J]. 金属热处理, 2018, 43(8): 39-44.
He Xing, Wang Jing, Kong Dejun, et al. Effect of TiC on microstructure and properties of TiC-Ti-Al coating prepared by laser cladding[J]. Heat Treatment of Metals, 2018, 43(8): 39-44.
[9]Lin D Y, Zhang N N, He B, et al. Tribological properties of FeCoCrNiAlB_x high-entropy alloys coating prepared by laser cladding[J]. Journal of Iron and Steel Research, International, 2017, 24(2): 184-189.
[10]Huang T D, Jian G L, Zhang C L, et al. Effect of carbon addition on the microstructure and mechanical properties of CoCrFeNi high entropy alloy[J]. Technological Sciences, 2018, 61: 117-123.
[11]曹振飞, 齐海波, 高珣, 等. 碳含量对CrMnFeCoNi高熵合金组织和性能的影响[J]. 应用激光, 2018, 38(3): 367-371.
Cao Zhenfei, Qi Haibo, Gao Xun, et al. Effect of carbon content on microstructure and properties of CrMnFeCoNi high entropy alloy[J]. Applied Laser, 2018, 38(3): 367-371.
[12]Chen Q S, Dong Y, Zhang J J, et al. Microstructure and properties of AlCoCrFeNiB_x (x=0, 0.1, 0.25, 0.5, 0.75, 1.0) high entropy alloys[J]. Rare Metal Materials and Engineering, 2017, 46: 651-656.
[13]张冲, 吴炳乾, 王乾廷, 等. 激光熔覆FeCrNiCoMnB_x高熵合金涂层的组织结构与性能[J]. 稀有金属材料与工程, 2017, 46(9): 2639-2644.
Zhang Chong, Wu Bingqian, Wang Qianting, et al. Microstructure and properties of FeCrNiCoMnB_x high-entropy alloy coating prepared by laser cladding[J]. Rare Metal Materials and Engineering, 2017, 46(9): 2639-2644.
[14]Kong K H, Kim K C, Kim W T, et al. Microstructural features of multicomponent FeCoCrNiSi_x alloys[J]. Applied Microscopy, 2015, 45: 32-36.
[15]张冲, 黄标, 戴品强. 退火处理对激光熔覆FeCoCrNiB/SiC高熵合金涂层组织与性能的影响[J]. 金属热处理, 2016, 41(9): 82-88.
Zhang Chong, Huang Biao, Dai Pinqiang. Effect of annealing on microstructure and properties of high-entropy FeCoCrNiB/SiC alloy coating prepared by laser cladding[J]. Heat Treatment of Metals, 2016, 41(9): 82-88.
[16]Chen Q S, Lu Y P, Dong Y, et al. Effect of minor B addition on microstructure and properties of AlCoCrFeNi multi-compenent alloy[J]. Transactions of Nonferrous Metals Society of China, 2015, 25(9): 2958-2964.

Effect of B on microstructure and hardness of FeCoCrNiSiB_x high entropy alloy laser clad coating

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Wang Yudai, Liu Yang, Zhu Yanyan, Tian Xiangjun, Cheng Xu, Ran Xianzhe, Qian Tingting. Effect of heat treatment on microstructure homogeneity and tensile properties of hybrid fabricated AerMet100 ultra-high strength steel [J]. Heat Treatment of Metals, 2022, 47(4): 1-9.
[2]	Zhang Ziyan, Chen Jun, Chen Xiaoya, Li Quan'an, Liu Jianxin. Effect of solution and aging treatment on microstructure and corrosion resistance of Mg-4Sm-3Gd-0.5Zr alloy [J]. Heat Treatment of Metals, 2022, 47(4): 10-16.
[3]	Liang Enpu, Xu Le, Yang Yong, Wang Maoqiu. Effects of Al and Cu additions on microstructure and mechanical properties of 40CrNi3MoV steel [J]. Heat Treatment of Metals, 2022, 47(4): 17-23.
[4]	Qi Xiaoliang, Li Yan, Ding Wei, Zhao Zengwu. Effect of original microstructure of medium manganese TRIP steel containing Al on microstructure and mechanical properties after intercritical annealing [J]. Heat Treatment of Metals, 2022, 47(4): 24-29.
[5]	Chen Baoan, Zhang Jingyuan, Zhu Zhixiang, Han Yu, Pan Xuedong, Zhang Lei, Chen Suhong. Effect of chemical composition on microstructure and properties of high strength Al-Mg-Si alloy [J]. Heat Treatment of Metals, 2022, 47(4): 30-38.
[6]	Chen Dongjun, Li Guangyang, Liu Gang. Effect of aging treatment on microstructure and mechanical properties of AlSi9Cu3 HPDC aluminum alloy [J]. Heat Treatment of Metals, 2022, 47(4): 53-56.
[7]	Chen Liansheng, Zhang Luyou, Tian Yaqiang, Yang Zixuan, Li Hongbin, Pan Hongbo, Wei Yingli. CCT curves and microstructure and properties of low-carbon high strength marine steel [J]. Heat Treatment of Metals, 2022, 47(4): 63-68.
[8]	Jia Changyuan, Huo Yuanming, He Tao, Huo Cunlong, Liu Keran. High temperature tensile deformation behavior and microstructure evolution law of 40CrNiMo steel [J]. Heat Treatment of Metals, 2022, 47(4): 69-74.
[9]	Wang Yunlong, Yu Wei, Zhang Yi, Shi Jiaxin, Li Minghui. Effect of austenitizing temperature on isothermal transformation and mechanical properties of bainite steel [J]. Heat Treatment of Metals, 2022, 47(4): 80-85.
[10]	Liu Liyan, Bi Wenzhen, Wei Xicheng. Effect of Mn element on microstructure evolution of galvanized coating of hot stamping steel [J]. Heat Treatment of Metals, 2022, 47(4): 93-99.
[11]	Fu Xibin, Chen Zihao, Zhang Ke, Zhao Shiyu, Sun Xinjun, Zhu Zhenghai, Liang Xiaokai, Yong Qilong. Effect of quenching temperature on microstructure and mechanical properties of high Ti low alloy wear-resistant steel [J]. Heat Treatment of Metals, 2022, 47(4): 122-127.
[12]	Su Pengji, Ma Yonglin, Dong Lili, Yang Xuefeng. Effect of magnetic field pre-annealing on microstructure and texture of CGO steel [J]. Heat Treatment of Metals, 2022, 47(4): 128-132.
[13]	Li Li, Zeng Yan, Wu Xiaochun. Heat treatment process optimization for 4Cr5Mo2VCo steel [J]. Heat Treatment of Metals, 2022, 47(4): 133-140.
[14]	Lü Jiesheng, Song Zhigang, He Jianguo, Feng Han, Zheng Wenjie, Zhu Yuliang. Microstructure transformation and strengthening-plasticization mechanism of S32205 duplex stainless steel after cold rolling and annealing [J]. Heat Treatment of Metals, 2022, 47(4): 141-145.
[15]	Wang Qi, Wu Guangliang. Effect of tempering temperature on microstructure and properties of 1100 MPa grade high-strength steel [J]. Heat Treatment of Metals, 2022, 47(4): 146-150.