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Wear resistance
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Proceedings Papers
HT 2021, Heat Treat 2021: Proceedings from the 31st Heat Treating Society Conference and Exposition, 57-63, September 14–16, 2021,
Abstract
PDF
Carburization is a common method of hardening steel surfaces to be wear-resistant for a wide range of mechanical processes. One critical characteristic of the carburization process is the increase in carbon content that leads to the formation of martensite in the surface layer. Combustion and spark-OES are two common methods for determination of carbon in steels. However, these techniques do not effectively separate carbon from near surface contaminants, carburized layers, and base material composition. Careful consideration of glow discharge spectroscopy as a method of precisely characterizing carbon concentration in surface layers as part of a production process should be evaluated in terms of how the resulting data align with other common analytical and metallurgical measurements. When used together, glow discharge spectroscopy, optical microscopy, and microhardness testing are all useful, complementary techniques for characterizing the elemental composition, visually observable changes in material composition, and changes in surface hardness throughout the hardened case, respectively. Close agreement between related measurements can be used to support the use of each of these techniques as part of a strong quality program for heat treatment facilities.
Proceedings Papers
HT 2019, Heat Treat 2019: Proceedings from the 30th Heat Treating Society Conference and Exposition, 166-176, October 15–17, 2019,
Abstract
PDF
Controlled nitriding and ferritic nitrocarburizing can significantly improve the corrosion and wear resistance of carbon and low-alloy steels. The framework for maintaining these processes is based on standards, such as AMS 2759/10 and 2759/12A, that specify tolerances for control parameters. This work investigates the impact of admissible deviations in control parameters on the performance of treated alloy samples. The findings of the study demonstrate that although tolerances are allowed, precise control in specific furnace classes is necessary to consistently obtain superior results.
Proceedings Papers
Pedro Gabriel Bonella de Oliveira, Ricardo Tadeu Junior Aureliano, Luiz Carlos Casteletti, André Itman Filho, Amadeu Lombardi Neto ...
HT 2019, Heat Treat 2019: Proceedings from the 30th Heat Treating Society Conference and Exposition, 193-199, October 15–17, 2019,
Abstract
PDF
This paper evaluates the influence of niobium additions on the wear behavior of high-silicon steel, representative of the advanced high strength steels used in the automotive industry. It describes the alloy compositions of the test samples used, the heat treatments to which they were subjected, and the tests that were subsequently performed. It also interprets test results and outlines key findings.
Proceedings Papers
Pedro Gabriel Bonella de Oliveira, Fábio Edson Mariani, Luiz Carlos Casteletti, André Itman Filho, Amadeu Lombardi Neto ...
HT 2019, Heat Treat 2019: Proceedings from the 30th Heat Treating Society Conference and Exposition, 207-213, October 15–17, 2019,
Abstract
PDF
The purpose of this work is to incorporate boriding and austempering treatments in a single thermal cycle and assess its effect on two high strength bainitic steels. The combined process, called boro-austempering, is a promising alternative to increase the surface wear resistance of advanced high strength steels as shown in the test results presented.
Proceedings Papers
HT 2019, Heat Treat 2019: Proceedings from the 30th Heat Treating Society Conference and Exposition, 349-354, October 15–17, 2019,
Abstract
PDF
Gas nitriding is proving to be a viable low temperature case hardening process for stainless steels used in numerous applications. In this study, a comparison between austenitic (grade 304) and martensitic (grade 401) stainless steels shows how pre-oxidation temperature affects the thickness and porosity of the compound layer produced as well as hardness and nitriding diffusion depth. The results indicate that austenitic stainless steel would be the best choice for a part requiring wear resistance and strength, and that a standard rolled martensitic stainless steel would suffice if only a wear resistant surface is needed.