Corrosion and Wear Performance of Stellite Alloy Hardfacing Prepared via Laser Cladding

Ding, Yinping; Liu, R.; Wang, L.; Li, J. H.; Yao, Jianhua

doi:10.1134/s2070205120020069

Cited by 13 publications

(7 citation statements)

References 18 publications

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“…[ 62–67 ] Stellite‐6 is an excellent corrosion resistance material because of the high‐chromium content, enabling it to form a strong oxide film on the surface. [ 65,68 ] The passive film formed on the stellite‐6‐deposited specimen is stable, while the substrate underwent severe corrosion damage and the electrochemical characteristics confirm the corrosion trend. [ 69 ] Pitting corrosion results of ASTM A36 steel substrate follow a similar trend as reported by Sri Ram Vikas et al [ 70 ]…”

Section: Resultsmentioning

confidence: 93%

Microstructure, Mechanical Properties, and Corrosion Behavior of Co‐Based Stellite 6 Multilayer Overlays Deposited on ASTM A36 Steel by Gas Metal Arc Welding Process

Sankarapandian¹,

Kumar

Kannan

et al. 2023

steel research int.

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Hardfacing is an effective method for restoring the damaged part. Herein, cobalt‐based superalloy Stellite‐6 is deposited on A36 substrate using gas metal arc welding process. The mechanical properties, microstructure, and corrosion behavior of Stellite‐6 overlays on A36 substrate are examined. Defect‐free hard overlays are obtained, and a dilution ratio of 19.9% is achieved with weaving technique. X‐ray diffraction analysis reveals the presence of M7C3, M23C6, M6C, and martensite in the Stellite‐6 hard overlays. The microstructure of the deposit contains martensite, carbides, and interdendritic precipitates while the mean hardness is 471 HV0.5. Tensile testing with specimens extracted on the longitudinal (LD) and transverse (TD) orientation of the stellite‐6 deposit shows a strength above 950 MPa along with the brittle nature of fracture. Grain growth is epitaxial and shows dendritic morphologies. The higher fraction of high‐angle grain boundaries improves the tensile strength of the deposit and interface region. The localized corrosion behavior of stellite‐6 hard overlays is found to be excellent, and the corrosion analysis exhibits a corrosion rate of 0.10 mils per year (mpy). The outcomes of the study highlight the feasibility of Stellite‐6 hard overlays for extending the service life of A36 steel in chloride environments.

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Section: Resultsmentioning

confidence: 93%

Microstructure, Mechanical Properties, and Corrosion Behavior of Co‐Based Stellite 6 Multilayer Overlays Deposited on ASTM A36 Steel by Gas Metal Arc Welding Process

Sankarapandian¹,

Kumar

Kannan

et al. 2023

steel research int.

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“…Stellite 6 is ideally suited to a variety of hardfacing applications, including valve seats and gates, pump shafts and bearings, erosion shields and rolling couples, etc., therefore, Stellite 6 hardfacings via various processes have been studied extensively [13][14][15][16][17][18]. For instance, the wear and corrosion resistance of Stellite 6 coatings applied with high velocity oxygen fuel (HVOF) spraying and gas tungsten arc welding (GTAW) hot wire technique were investigated, associated with the microstructural characteristics [13].…”

Section: Considerable Progress Has Been Made In Development Of New Ni...mentioning

confidence: 99%

Microstructural studies of Stellite 6 hardfacing deposited on nickel-based superalloys subjected to long-time aging

Zhang,

Liu,

et al. 2024

Preprint

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Stellite 6 hardfacing is deposited on Haynes 282 and Inconel 740H via plasma transferred arc (PTA) welding. The fabricated hardfacing specimens are subjected to different post-welding heat treatments, then aged at 760 °C, 815 °C and 871 °C for a time length ranging from 1000 to 30000 h. The microstructures of the hardfacings before and after long-time aging are investigated with SEM/EDS/XRD. It is shown that the PTA welding process causes the hardfacing microstructure deviating from Stellite 6 alloy due to dilution. With participation of other elements from the substrate material, the compositions of both solid solution and carbide/intermetallic of the Stellite 6 hardfacing are modified. In the meanwhile, Ti-rich or Ti/Nb-rich new phases are generated. Long-time aging has an impact on the microstructures of the hardfacings, but at 760 ℃, in particular, for an exposure time less than 20000 h, the microstructures of the hardfacings do not show obvious change. However, when the hardfacing specimens are aged at 815 ℃ and 871 ℃ even for an exposure time of 1000 h only, Al-rich precipitates can occur and the amount of the precipitates increase with aging time. These brittle precipitates generally have a detrimental effect on the performance of the hardfacings, because they can deteriorate the ductility of the hardfacings. With the presence of Al-rich precipitates the hardness of the hardfacings decreases.

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“…For a die/mold with high precision requirement, the high-temperature process should be avoided. Whereas other surface treatments, their limitations also are apparent, for example, the unavoidable pores formed during laser cladding can negatively impact corrosion resistance [9,10]; the operation cost of physical/chemical vapour deposition (PVD/ CVD) is high [11]. Consequently, the demand for alternative treatment is increasing.…”

Section: Introductionmentioning

confidence: 99%

“…This leads to a decrease in durability and service lifetime [1–4]. To date, the most effective method to protect H13 steel is surface engineering such as thermochemical treatment [5–8], laser cladding [9,10], physical/chemical vapour deposition (PVD/CVD) [11], and thermal spraying [12], of which thermochemical treatment can form a compound or diffusion layer with high hardness to improve wear resistance [5,6]. However, the corrosion resistance could not be improved significantly [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of 3-aminopropyltriethoxysilane/tetraethylorthosilicate mixture pretreatment on the microstructure and corrosion resistance of zeolite coating

Chen

2023

Surface Engineering

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The influence of silane pretreatment with five different volume ratios (100/0, 75/25, 50/50, 25/ 75, and 0/100) of 3-aminopropyltriethoxysilane (APTES)/tetraethylorthosilicate (TEOS) on microstructure and corrosion resistance of the hydrothermal synthesized zeolite coatings on the H13 steel substrates was investigated. The surface of the zeolite coatings on the 100/0, 75/25, and 50/50 mixture of the APTES/TEOS pretreated substrates was composed of intergrown rectangular particles. Additionally, pores were observed. A 25/75 mixture of APTES/TEOS pretreatment smoothed the edges and angles of zeolite particles with gel-like materials filled in the pores. In pure TEOS pretreatment, microcracks, and much gel-like materials were observed on the zeolite coating. The electrochemical test revealed that the zeolite coating on a 50/50 mixture of the APTES/TEOS pretreated substrate exhibited the highest corrosion resistance in 3.5 wt-% NaCl solution. This was because a 50/50 mixture of APTES/TEOS pretreatment advantageously promoted development of a dense and thick gel layer, which enhanced the intergrowth of zeolite particles.

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Corrosion and Wear Performance of Stellite Alloy Hardfacing Prepared via Laser Cladding

Cited by 13 publications

References 18 publications

Microstructure, Mechanical Properties, and Corrosion Behavior of Co‐Based Stellite 6 Multilayer Overlays Deposited on ASTM A36 Steel by Gas Metal Arc Welding Process

Microstructure, Mechanical Properties, and Corrosion Behavior of Co‐Based Stellite 6 Multilayer Overlays Deposited on ASTM A36 Steel by Gas Metal Arc Welding Process

Microstructural studies of Stellite 6 hardfacing deposited on nickel-based superalloys subjected to long-time aging

Influence of 3-aminopropyltriethoxysilane/tetraethylorthosilicate mixture pretreatment on the microstructure and corrosion resistance of zeolite coating

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