Nb doping in laser-cladded Fe25Co25Ni25(B0.7Si0.3)25 high entropy alloy coatings: Microstructure evolution and wear behavior

Dynamic response of high-entropy alloys to ballistic impact

“…For instance, AlCrFe 2 Ni 2 W 0.2 Mo 0.75 coating provides excellent wear protection for ocean engineering equipment because of its good corrosion resistance, high hardness, and reaction products formed on the worn surface ( 15 ). Addition of Nb in Fe 0.25 Co 0.25 Ni 0.25 (B 0.7 Si 0.3 ) 0.25 coating greatly benefits the wear resistance of the alloy with enhanced glass formation ability ( 16 ). The mechanism for plastic deformation of HEAs is considered to be between those for conventional alloys and amorphous metals or involves both ( 17 , 18 ).…”

“…Addition of Nb in Fe 0.25 Co 0.25 Ni 0.25 (B 0. 7 Si 0.3 ) 0.25 coating greatly benefits the wear resistance of the alloy with enhanced glass formation ability (16). The mechanism for plastic deformation of HEAs is considered to be between those for conventional alloys and amorphous metals or involves both (17,18).…”

Effect of phase transformation on mechanical properties of Al16.80Co20.74Cr20.49Fe21.28Ni20.70 high entropy alloy coatings processed by laser cladding

“…It was defined as an alloy that included five or more elements with an equimolar or near equimolar ratio, and the content of each element was between 5% and 35% [2]. For phase composition, the presence of the high entropy effect and the sluggish diffusion effect promote the formation of single-phase solid solution and nano-sized precipitates rather than brittle phases or other intermetallic compounds in traditional metallurgical theory [3][4][5]. Numerous studies have implied that HEAs often have excellent mechanical, physical, and chemical properties, such as high-temperature wear resistance [6], high strength and ductility [7] and excellent corrosion resistance [8].…”

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

“…Tribological studies on HEAs are mostly conducted with variations in content of one element and finding the optimum concentration of the element for minimum wear rate [360,[363][364][365]371,[377][378][379][380]383,384,386,390,394,395,397,398,407,408,412,421,422,424,427,428,431,440,454,455,463,470,472,474]. Furthermore, the effect of Al content on wear properties and hardness has been studied more than any other metal.…”

“…Cheng et al [394] noticed that the wear resistance and hardness of (Fe 0.25 Co 0.25 Ni 0.25 (B 0.7 Si 0.3 ) 0.25 ) 100−x Nb x (x = 0-2) coating (on Q235 steel) increased with the Nb content from x = 0 to x = 2. The measured hardness values were 587.1 HV 0.1 and 821.5 HV 0.1 for Nb content of x = 0 and x = 1, respectively.…”