316L stainless steel repaired layers by weld surfacing and laser cladding on a 27SiMn steel: A comparative study of microstructures, corrosion, hardness and wear performances

Li, Zhihao; Chai, Linjiang; Tang, Yi; Zhang, Chengquan; Qi, Lan; Zhang, Kaixiang; Peng, Chaodong; Huang, Chen Hung

doi:10.1016/j.jmrt.2023.01.162

Cited by 32 publications

(7 citation statements)

References 46 publications

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“…Moreover, based on Figure 6 b and Table 4 [ 26 ], it was concluded that among the five principal metal elements of the HEA coating, Fe and Cr elements were more abundant [ 24 ], which was due to the small absolute value of the mixing enthalpy of Fe and Cr with four other metal elements, so they did not easily form compounds with other metal elements but tended to segregate among dendrites. Related studies have shown that the more negative the enthalpy of mixing between atoms, the easier it is to form compounds.…”

Section: Resultsmentioning

confidence: 99%

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Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

et al. 2023

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FeCoNiCrMo0.2 high entropy alloy has many excellent properties, such as high strength, high wear resistance, high corrosion resistance, and high ductility. To further improve the properties of this coating, FeCoNiCrMo high entropy alloy (HEA) coatings, and two composite coatings, FeCoNiCrMo0.2 + WC and FeCoNiCrMo0.2 + WC + CeO2, were prepared on the surface of 316L stainless steel by laser cladding technology. After adding WC ceramic powder and CeO2 rare earth control, the microstructure, hardness, wear resistance, and corrosion resistance of the three coatings were carefully studied. The results show that WC powder significantly improved the hardness of the HEA coating and reduced the friction factor. The FeCoNiCrMo0.2 + 32%WC coating showed excellent mechanical properties, but the distribution of hard phase particles in the coating microstructure was uneven, resulting in unstable distribution of hardness and wear resistance in each region of the coating. After adding 2% nano-CeO2 rare earth oxide, although the hardness and friction factor decreased slightly compared with the FeCoNiCrMo0.2 + 32%WC coating, the coating grain structure was finer, which reduced the porosity and crack sensitivity of the coating, and the phase composition of the coating did not change; there was a uniform hardness distribution, a more stable friction coefficient, and the flattest wear morphology. In addition, under the same corrosive environment, the value of polarization impedance of the FeCoNiCrMo0.2 + 32%WC + 2%CeO2 coating was greater, the corrosion rate was relatively low, and the corrosion resistance was better. Therefore, based on various indexes, the FeCoNiCrMo0.2 + 32%WC + 2%CeO2 coating has the best comprehensive performance and can extend the service life of 316L workpieces.

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Section: Resultsmentioning

confidence: 99%

“…The base material used was 316L stainless steel [ 23 , 24 , 25 ], size 150 × 50 × 8 mm. The surface to be fused was polished with 150# and 600# sandpaper to remove oxides and rust traces, and then it was cleaned with anhydrous ethanol to remove surface oil and dirt [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

et al. 2023

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“…(a) shows the metallographic structure at the top of the cladding layer, (b) shows the metallographic structure at the middle of the cladding layer, (c) shows the microstructure at the lap of the cladding layer, (d) shows the microstructure at the bottom of the cladding layer, and the microstructure evolution is mainly determined by the ratio of a temperature gradient to solidification rate [25]. The metallographic structure at (a) consists of fine cellular and equiaxed crystals because of the large area of heat exchange between the top of the cladding layer and the outside during fabrication, resulting in smaller and denser crystals [26]. The microstructure at (b) is composed of columnar dendrites and a small number of cellular crystals.…”

Section: Experimental Results and Discussion 31 The Influence Of Diff...mentioning

confidence: 99%

Study on overlap rate and machinability of selected laser melting of maraging steel

Yang,

Li,

Liu

et al. 2023

Materials Science-Poland

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In order to investigate the material properties of maraging steel laser additive manufacturing, the cladding layers with different overlap rates on the surface of 18Ni300 were prepared by laser cladding technology, and the morphology, microstructure, and hardness of the cladding layer with different overlap rates were analyzed by various means. The results show that the macroscopic morphology of the cladding layer mainly presents three states under different overlap rates, and the change of overlap rate has no effect on the microstructure in the same area of the cladding layer, but does have an effect on the size of the cladding layer. In the end, the optimum overlap rate is 50%, the surface is smooth, the inner is free from defects, the bonding effect is good, and the metallographic structure is even with high hardness. Milling experiments were carried out on the material after laser additive manufacturing, and the surface morphology was observed, confirming a smooth and well-flattened surface with a roughness of 0.342 μm had been obtained. The suitable overlap rate can make the coating surface smoother, reduce the subsequent processing loss, and improve the production efficiency and powder utilization rate while ensuring the coating quality.

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“…It is explainable by the formation of a brittle surface of SS 316L due to the corrosion reactions on the surface. This corroded surface attributes more brittle property due to the oxidation, thus, the immersed samples attributed higher VHN values [61,62]. The HV value increased by 6.34% for materials soaked in NaCl solution, and the value obtained from materials soaked in H2SO4 solution increased by 1.94%.…”

Section: Effects Of Immersion In Corrosive Medium On the Hardness Lev...mentioning

confidence: 95%

Effects of immersion in the NaCl and H2SO4 solutions on the corrosion rate, microstructure, and hardness of stainless steel 316L

Wicaksono,

Sutanto,

Ruslan

2023

Res. Eng. Struct. Mater.

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Stainless steel is one of the materials with excellent corrosion resistance, so it is widely applied in various fields such as the chemical industry, aerospace, power generation, and biomedicine. The environmental condition (neutral, acidic, salty, or basic) is the most important thing to be considered prior to choosing palpable stainless steel materials. In this study, the corrosion behaviors of stainless-steel type SS 316L under exposure immersions in salty and acidic environments using sodium chloride (NaCl) and sulfuric acid (H2SO4) solutions were investigated, by referring to a standard method of ASTM G31-72. Scanning electron microscopy (SEM) results revealed that the specimen in NaCl solution exhibited a darker color, and relatively similar shape of cracks are observed. In contrast, the specimen immersed in H2SO4 was observed to have a large diagonal crack. The corrosion rate of SS 316L immersed in NaCl was lower with a value of 0.4260 mpy, compared to that of H2SO4 which was 2.5141 mpy. The Vickers hardness test showed that the hardness value of NaCl immersion was higher than that of H2SO4, which was 6.34% and 1.94%, respectively. It can be concluded that the SS 316L is better used in a salty environment compared to acidic conditions, because the main function of SS 316L is to be able to withstand rust, one of which is caused by chloride compared to other types of stainless-steel.

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316L stainless steel repaired layers by weld surfacing and laser cladding on a 27SiMn steel: A comparative study of microstructures, corrosion, hardness and wear performances

Cited by 32 publications

References 46 publications

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

Effects of Nano-CeO2 on Microstructure and Properties of WC/FeCoNiCrMo0.2 Composite High Entropy Alloy Coatings by Laser Cladding

Study on overlap rate and machinability of selected laser melting of maraging steel

Effects of immersion in the NaCl and H2SO4 solutions on the corrosion rate, microstructure, and hardness of stainless steel 316L

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