Research on Microstructure and Properties of NiCrWCAl Alloy Coatings Fabricated by Argon Arc Cladding AITranslate
Abstract AITranslate
NiCrWCAl alloy coatings with different aluminum contents were fabricated on Q235 steel sub- strate by argon arc cladding technology. The microstructure and properties of cladding coatings were investigated by using inverted microscope, X-ray diffractometer, hardness tester and electrochemical workstation. The results show that the fabricated NiCrWCAl alloy coatings have refined grains,uniformly dispers- ed fine precipitates and compact microstructure with the increase of the aluminum content in a certain range. The cladding coatings mainly consist of fcc-structure γ-Ni solid solution, γ′-Ni3A1 phase, bcc-structure β-NiAl phase,and Cr7 C3 and WC hard phases. As the aluminum content increased, the average hard- ness of cladding coatings firstly increases and then decreases. The microhardness distribution of the clad- ding coating is ideal with 7% aluminum content,and its average HV0.2 value is 550. After addition of alu- minum element, NiCrWC alloy coatings have more positive corrosion potential, and the corrosion resistance of cladding coatings gradually intensifies with aluminum content increasing. When the aluminum content is 7 % ,the cladding coating displays the lowest corrosion rate and excellent corrosion resistance with a corro- sion current density （icon） of 0. 872 μA/cm2and a polarization resistance （Rp） of 113.7 kΩ· cm2.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.411[金属学及工艺—金属材料]
Citation Information:
NiCrWCAl alloy coatings with different aluminum contents were fabricated on Q235 steel sub- strate by argon arc cladding technology. The microstructure and properties of cladding coatings were investigated by using inverted microscope, X-ray diffractometer, hardness tester and electrochemical workstation. The results show that the fabricated NiCrWCAl alloy coatings have refined grains,uniformly dispers- ed fine precipitates and compact microstructure with the increase of the aluminum content in a certain range. The cladding coatings mainly consist of fcc-structure γ-Ni solid solution, γ′-Ni3A1 phase, bcc-structure β-NiAl phase,and Cr7 C3 and WC hard phases. As the aluminum content increased, the average hard- ness of cladding coatings firstly increases and then decreases. The microhardness distribution of the clad- ding coating is ideal with 7% aluminum content,and its average HV0.2 value is 550. After addition of alu- minum element, NiCrWC alloy coatings have more positive corrosion potential, and the corrosion resistance of cladding coatings gradually intensifies with aluminum content increasing. When the aluminum content is 7 % ,the cladding coating displays the lowest corrosion rate and excellent corrosion resistance with a corro- sion current density （icon） of 0. 872 μA/cm2and a polarization resistance （Rp） of 113.7 kΩ· cm2.
quote
| GB/T 7714-2015 | [1] WANG Xiao-feng, ZHAO Rui-shan, CHEN Zhi-wei. Research on Microstructure and Properties of NiCrWCAl Alloy Coatings Fabricated by Argon Arc Cladding[J]. Rare Metals and Cemented Carbides, 2018(3): 13-18. |
| MLA | [1] WANG Xiao-feng, et al., "Research on Microstructure and Properties of NiCrWCAl Alloy Coatings Fabricated by Argon Arc Cladding." Rare Metals and Cemented Carbides, no. 3, 2018, pp. 13-18. |
| APA | [1] WANG Xiao-feng, ZHAO Rui-shan, & CHEN Zhi-wei. (2018). Research on Microstructure and Properties of NiCrWCAl Alloy Coatings Fabricated by Argon Arc Cladding. Rare Metals and Cemented Carbides(3), 13-18. |
| IEEE | [1] WANG Xiao-feng, ZHAO Rui-shan, and CHEN Zhi-wei, "Research on Microstructure and Properties of NiCrWCAl Alloy Coatings Fabricated by Argon Arc Cladding," Rare Metals and Cemented Carbides, no. 3, pp. 13-18, 2018. keywords: {NiCrWCAl alloy coating;argon arc cladding;microstructure;property} |