Magnetic properties of 42CrMo4 steel

Bulín, Tomáš; Švábenská, Eva; Hapla, M.; Roupcová, Pavla; Ondrůšek, Čestmír; Schneeweiss, O.

doi:10.1088/1757-899x/179/1/012010

Cited by 7 publications

(8 citation statements)

References 6 publications

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“…%), overlapped dominant diffraction peaks of the austenite and martensite/ferrite phases, and possible texture effects (seen as different ratios of the integral intensities of the BCC diffraction peaks in comparison to those of the α-Fe ideal powder). No distinguishable diffraction peaks of carbides (such as those reported in [23]) could be observed in the measured XRD patterns. Although, the presence of such phases in very small amounts could not be unambiguously excluded on the basis of the XRD measurements.…”

Section: Xrd Analysismentioning

confidence: 82%

“…In such types of steel, Fe carbide cementite (Fe 3 C), Mn carbide (Mn 3 C), and/or Cr carbide (Cr 23 C 6 ) can be present in heat-treated states. Even in work [23] of the same 42CrMo4 steel being in heat-treated and soft annealed state cementite, Fe 3 C was distinguished roughly by XRD and by MS, also Mn carbide Mn 3 C and Cr 23 C 6 carbide, where Fe atoms substitute Cr atoms in this carbide and allow to observe it by MS.…”

Section: Discussionmentioning

confidence: 97%

“…A goal of the present research is to investigate the role of retained austenite in 42CrMo4 low-alloy steel primarily with the help of CXMS. The 42CrMo4 construction steel can be applied for statically and dynamically stressed machine components due to a high fatigue limit [22] and has potential applications in magnetic circuits where good mechanical properties together with soft magnetic properties are requested [23]. In such applications, paramagnetism and softness of the retained austenite can negatively involve the macroscopic properties of construction parts, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Contradictory phase analytical results (including CXMS) have been obtained in a heat-treated and soft annealed state of 42CrMo4 steels. Either no austenite and only ferrite, cementite and manganese, and chromium-containing carbides [23] were identified, or besides ferrite and carbides, austenite was also identified in the CEMS spectrum [24].…”

Section: Introductionmentioning

confidence: 99%

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Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel

Pěchoušek

Кузманн

Vondrasek

et al. 2022

Metals

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Low-alloy 42CrMo4 steels were studied by 57Fe Mössbauer spectroscopy (MS), X-ray diffractometry (XRD), and Energy Dispersive X-ray Spectroscopy (EDS) measurements. The investigations were performed on metallographic samples, which were subjected to a series of successive grinding and polishing with a progressively finer grit. Conversion X-ray Mössbauer spectroscopy (CXMS) was used to determine the occurrence of austenite in steel samples. It is a unique method detecting the austenite content very sensitively. Six samples with different surface preparation were investigated, starting with 4.8% of austenite on an as-cut sample, and a large decrease in the retained austenite to 2.6% was observed after the first grinding of a hardened cut sample. Additionally, an unexpectedly large decrease in the austenite content to 2.3% was found due to the final polishing. A second time applied successive grinding and polishing of all samples resulted in identical austenite content determined by CXMS of approx. 5%, which proved the applicability of the CXMS method. Generally, the result calls attention to the importance of preparation of metallurgical samples by grinding and polishing where the results can vary significantly on the level of surface processing.

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Section: Xrd Analysismentioning

confidence: 82%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel

Pěchoušek

Кузманн

Vondrasek

et al. 2022

Metals

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“…Material 41CrMo4 is selected for the rotor body to ensure high centrifugal force resistance and sufficient magnetic properties. Measured electromagnetic properties of 41CrMo4 was published in [14].…”

Section: B Rotor Topology Selectionmentioning

confidence: 99%

Design of high-speed induction machine for the 6 kW, 120 000 rpm helium turbo-circulator

Bárta

Ondrůšek

Lošák

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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Φ Abstract --High-speed ranging requires various equipment, for example compressors, turbo-compressors and turbocirculators nowadays. Solutions using electrical drive with gearboxes is limited by technical feasibility, lifetime and maintenance of gearbox systems. Thanks to development of frequency converters is possible to build direct high-speed electrical drive. This paper is dealing with design of high-speed solid rotor cage induction machine for running 6 kW, 120 000 rpm helium turbo-circulator. Design of high speed electrical machine for TC is described from requirement specification to manufacturing. Results of mechanical, electromagnetic and thermal calculations are given. Proposed design approached can be used in various application in which high speed electrical machine is required.

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Magnetic Measurements of Solid Material

Bulín

Ondrůšek

2017

Advances in Intelligent Systems and Computing

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Magnetic properties of 42CrMo4 steel

Cited by 7 publications

References 6 publications

Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel

Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel

Design of high-speed induction machine for the 6 kW, 120 000 rpm helium turbo-circulator

Magnetic Measurements of Solid Material

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