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Hardening (metallurgy)

About: Hardening (metallurgy) is a research topic. Over the lifetime, 25584 publications have been published within this topic receiving 376012 citations.


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Journal ArticleDOI
TL;DR: In this paper, the authors considered the problem of finding the stresses and displacements in a body made up by an elastic-perfectly plastic material under a given time-dependent load, and proved existence of a (strong) solution of the variational inequality.

134 citations

Journal ArticleDOI
TL;DR: In this article, the deformation behavior of high manganese austenitic Hadfield steel sheet samples was studied under uniaxial tensile test conditions and the effect of temperature on the tensile behaviour and fracture appearance was also studied using the scanning and transmission electron microscopes.

134 citations

Journal ArticleDOI
TL;DR: In this article, the impact of different grinding parameters on the structure and the achievable hardness penetration depth are discussed in detail, especially the impact on the hardness penetration depths of different grinder parameters.
Abstract: The invention of advanced grinding processes enabling the surface hardening of steel parts was described for the first time in 1994 [1]. In such operations, named grind-hardening the dissipated heat in grinding is utilized to induce martensitic phase transformations in the surface layer of components. A grinding process then becomes a heat treatment operation like induction or flame hardening. The fundamentals of this new process, which had been developed up to first industrial applications, will be illustrated in this paper. Especially the impact of different grinding parameters on the structure and the achievable hardness penetration depth are discussed in detail.

134 citations

Journal ArticleDOI
TL;DR: In this article, the deformation responses of NiCoCrFe high-entropy alloy (HEA) under quasi-static and dynamic (1,000-6,000/s) tension were investigated.

134 citations

Journal ArticleDOI
TL;DR: In this paper, a single-crystal nickel-based superalloy with rhenium (CMSX-4) was studied at both room and elevated temperatures, and it was found that yield strength and ultimate tensile strength of this material initially increases with temperature, reaches a peak at around 800 °C, and then starts rapidly decreasing with rise in temperature.
Abstract: Tensile behavior of a new single-crystal nickel-based superalloy with rhenium (CMSX-4) was studied at both room and elevated temperatures. The investigation also examined the influence of γ′ precipitates (size and distribution) on the tensile behavior of the material. Tensile specimens were prepared from single-crystal CMSX-4 in [001] orientation. The test specimens had the [001] growth direction parallel to the loading axis in tension. These specimens were given three different heat treatments to produce three different γ′ precipitate sizes and distributions. Tensile testing was carried out at both room and elevated temperatures. The results of the present investigation indicate that yield strength and ultimate tensile strength of this material initially increases with temperature, reaches a peak at around 800 °C, and then starts rapidly decreasing with rise in temperature. Both yield and tensile strength increased with increase in average γ′ precipitate size. Yield strength and temperature correlated very well by an Arrhenius type of relationship. Rate-controlling process for yielding at very high temperature (T ≥ 800 °C) was found to be the dislocation climb for all three differently heat-treated materials. Thermally activated hardening occurs below 800 °C whereas above 800 °C thermally activated softening occurs in this material.

133 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202250
2021989
20201,144
20191,076
20181,038
2017981