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Tao L, Yang Y, Zhu W, Sun J, Wu J, Xu H, Yan L, Yang A, Xu Z. Stress Distribution in Wear Analysis of Nano-Y 2O 3 Dispersion Strengthened Ni-Based μm-WC Composite Material Laser Coating. MATERIALS (BASEL, SWITZERLAND) 2023; 17:121. [PMID: 38203975 PMCID: PMC10780224 DOI: 10.3390/ma17010121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024]
Abstract
Oxide-dispersion- and hard-particle-strengthened (ODS) laser-cladded single-layer multi-tracks with a Ni-based alloy composition with 20 wt.% μm-WC particles and 1.2 wt.% nano-Y2O3 addition were produced on ultra-high-strength steel in this study. The investigation of the composite coating designed in this study focused on the reciprocating friction and wear workpiece surface under heavy load conditions. The coating specimens were divided into four groups: (i) Ni-based alloy, nano-Y2O3, and 2 μm-WC (2 μm WC-Y/Ni); (ii) Ni-based alloy with added 2 μm-WC (2 μmWC/Ni); (iii) Ni-based alloy with added 80 μm-WC (80 μmWC/Ni); and (iv) base metal ultra-high-strength alloy steel 30CrMnSiNi2A. Four conclusions were reached: (1) Nano-Y2O3 could effectively inhibit the dissolution of 2 μm-WC. (2) It can be seen from the semi-space dimensionless simulation results that the von Mises stress distribution of the metal laser composite coating prepared with a 2 μm-WC particle additive was very uniform and it had better resistance to normal impact and tangential loads than the laser coating prepared with the 80 μm-WC particle additive. (3) The inherent WC initial crack and dense stress concentration in the 80 μm-WC laser coating could easily cause dislocations to accumulate, as shown both quantitatively and qualitatively, resulting in the formation of micro-crack nucleation. After the end of the running-in phase, the COF of the 2 μm-WC-Y2O3/Ni component samples stabilized at the minimum of the COF of the four samples. The numerical order of the four COF curves was stable from small to large as follows: 2 μm-WC-Y2O3/Ni, 2 μm-WC/Ni, 80 μm-WC/Ni, and 30CrMnSiNi2A. (4) The frictional volume loss rate of 2 μm-WC-Y2O3/Ni was 1.3, which was significantly lower than the corresponding values of the other three components: 2.4, 3.5, and 13.
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Affiliation(s)
- Li Tao
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Yang Yang
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Wenliang Zhu
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Jian Sun
- School of Mechanical and Electrical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Jiale Wu
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Hao Xu
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Lu Yan
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Anhui Yang
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
| | - Zhilong Xu
- Department of Robot Engineering, School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China; (L.T.); (Y.Y.); (W.Z.); (J.W.); (H.X.); (L.Y.); (A.Y.); (Z.X.)
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Effect of γ' Phase Elements on Oxidation Behavior of Nanocrystalline Coatings at 1050 °C. MATERIALS 2021; 14:ma14010202. [PMID: 33406581 PMCID: PMC7795590 DOI: 10.3390/ma14010202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/30/2020] [Accepted: 12/31/2020] [Indexed: 11/16/2022]
Abstract
To study the effect of γ′ phase elements on the oxidation behavior of nanocrystalline coatings, two comparable nanocrystalline coating systems were established and prepared by magnetron sputtering. The oxidation experiments of the nanocrystalline coatings on the K38G and N5 superalloys were carried at 1050 °C for 100 h, respectively. The chemical composition of the above coatings is the same as the substrate alloy, including the γ′ elements, such as Al, Ta, and Ti. After serving at a high temperature for certain periods, their oxides participated and then affected the oxidation behavior of the coatings. The Al2O3 scale can be formed on the N5 coating, which cannot be formed on the K38G coating. Tantalum and titanium oxides can be detected on the oxide scale, which ruin its purity and integrity.
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