Influence of Low Temperature on Mechanical Properties of Carbon Steel P110 Estimated by Means of Small Punch Test

Stępniewska, Malwina; Romelczyk-Baishya, Barbara; Brynk, Tomasz; Giżyński, Maciej; Pakieła, Zbigniew

doi:10.1007/978-981-13-0411-8_15

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…The Tsp was calculated as 146.1°C (127.5 K) and -147.8°C (125.35 K). The correlation factor, calculated in Kelvins is 0.55 so the linear relation for P110 steel can be described as follow: DBTT = 0.55T SPT Detailed cal culation of Tsp and linear correlation was presented in [19]. The difference between DBTT and Tsp was cause by two factors: size of the samples and velocity of the test.…”

Section: Resultsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Romelczyk-Baishya,

Lumelskyj,

Stępniewska

et al. 2019

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In this paper small punch test (SPT) which is one of miniaturized samples technique, was employed to characterize the mechanical properties of carbon steel P110. The tests were carried out in the range of -175°C to RT. Results obtained for SPT were compared to those calculated for tensile and Charpy impact test. Based on tensile and SPT parameters numerical model was prepared.8 mm in diameter and 0.8 mm in height (t) discs with and without notch were employed in this research. The specimens had different depth notch (a) in the range of 0.1 to 0.4 mm.It was estimated that α factor for comparison of Tsp and DBTT for carbon steel P110 is 0.55 and the linear relation is DBTT = 0.55T SPT . The numerical model fit with force -deflection curve of SPT. If the factor of notch depth and samples thickness is higher than 0.3 the fracture mode is transformed from ductile to brittle at -150°C.

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Section: Resultsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Romelczyk-Baishya,

Lumelskyj,

Stępniewska

et al. 2019

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Determination of the fracture toughness of carburized Pyrowear 53 steel for planetary gears by the small punch test method

Majchrowicz,

Romelczyk-Baishya,

Wieczorek-Czarnocka

et al. 2024

Arch. Civ. Mech. Eng.

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The aim of the current study was to determine the fracture toughness of different zones in carburized Pyrowear 53 steel using the small punch test (SPT) method. Firstly, Pyrowear 53 steel was quenched and tempered using different processing parameters to obtain core materials with varied microstructures and fracture toughness. The results obtained for the core material in standard fracture toughness tests were then compared with the SPT results, which allowed the determination of a formula correlating the fracture energy integral, JSPT, from the SPT with JQ integrals obtained from standardized compact tension specimens. In the next stage, Pyrowear 53 steel was carburized at 925 °C and divided into the following zones: (1) a carburized layer (up to 0.5 mm from the surface), (2) a transition layer (from 0.5 to 1.5 mm), and (3) a core zone (more than 1.5 mm). Each zone was characterized in terms of its microstructure and tensile properties using miniaturized test specimens. Finally, the fracture toughness values of the core zone (JSPT = 78–102 kJ/m2), the transition layer (JSPT = 71–80 kJ/m2), and the carburized layer (JSPT = 8.1–9.1 kJ/m2) were determined based on the obtained SPT results. It was shown that the use of such a relatively simple SPT method with the proposed energy-based approach seems to be a promising way of determining the fracture toughness of thin layers or local changes in the fracture behavior of surface-treated materials.

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Influence of Low Temperature on Mechanical Properties of Carbon Steel P110 Estimated by Means of Small Punch Test

Cited by 2 publications

References 19 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Determination of the fracture toughness of carburized Pyrowear 53 steel for planetary gears by the small punch test method

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