Notch aspects of RSP steel microstructure

Černý, Michal; Filípek, Josef; Мазал, Павел; Varner, David

doi:10.11118/actaun201260050049

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…M. Černý Et Al. [4] proceeded Rapid Solidification Powder (RSP) steels. One of the steels was Böhler M390.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the nanoindentation results of two generation of powder metalurgy produced materials for plastic industry

Majerský,

Barényi,

Majerík

et al. 2023

Eng. rev. (Online)

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This article analyses the properties and nanoindentation characteristics of the stainless PM steels M390 Microclean® and M398 Microcelan®. In a first part, the literature sources on PM steels, stainless steels and thermochemical treatment were studied in order to collect information on the problems that can be found in the thermal or thermochemical treatment of M390 and M398 to improve their mechanical and anticorrosion properties. Optical microscopy of both materials is presented to show the structure and get a more complex picture about them. The main reason for this article – the nanoindentation was performed on the Hysitron Triboindenter TI 950. For both samples, 7 indentation points were selected on the SPM scan – 4 for carbides and 3 for the base matrix. Based on the results, the nanohardness H and the reduced modulus of elasticity Er as well as the reduced modulus of elasticity of the phases ES were determined. The nanohardness H of the matrix corresponds to that of the ferrite, which confirms the material manufacturer's specifications. The nanohardness of the carbides corresponds to the results of the other materials tested by CEDITEK.

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“…M. Černý Et Al. [4] proceeded Rapid Solidification Powder (RSP) steels. One of the steels was Böhler M390.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the nanoindentation results of two generation of powder metalurgy produced materials for plastic industry

Majerský,

Barényi,

Majerík

et al. 2023

Eng. rev. (Online)

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Machining of M390 Microclean® and M398 Mircoclean® PM Steels - the Comparison of Cutting Forces and Surface Roughness

Majerík,

Majerský,

Chochlíková

et al. 2023

Manufacturing Technology

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Article deals with comparison of cutting forces and surface roughness between materials produced by powder metallurgy -M390 and M398 Microclean® from producer, company Böhler. Main interest is the analysis and comparison of the cutting forces and surface roughness after the processing by cutting inserts with DNMG and WNMG geometry, radius 0.4 and 0.8 mm, after hard turning at the same process parameters for both materials and all four types of cutting inserts. The comparative studies were carried out for cutting forces and surface roughness with the aiming to observe the difference between "old generation" M390 and "new generation" M398 PM Steel for future processing in production. The corelation between the cutting forces and surface roughness was investigated. The measurement results indicate that the M398 is necessary to process with higher cutting forces which are linked with higher surface roughness than for M390. It is in relation with higher contain of additive elements in M398 and carbides formed by them even that both materials are in delivered condition soft annealed, containing Ferrite instead of Martensite [1], [2]. No less significant is influence of the type of cutting insert. The WNMG geometry showed better results for processing of both materials and is more suitable for their processing as well as radius 0.8 reached superior cutting parameters and surface roughness than 0.4. The result of this experiment is the selection of the appropriate geometry of the cutting insert, together with the determination of the correct parameters for machining the investigated materials supported by the results of the experiment. Suitable combination of cutting inserts and cutting parameters can reduce the time and energy requirements to process these high-quality steels. The results of this experiment helped to fulfil the knowledge about both materials in the row of experiments which are provided to increase material properties against abrasion and wear.

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Notch aspects of RSP steel microstructure

Cited by 2 publications

References 1 publication

Comparison of the nanoindentation results of two generation of powder metalurgy produced materials for plastic industry

Comparison of the nanoindentation results of two generation of powder metalurgy produced materials for plastic industry

Machining of M390 Microclean® and M398 Mircoclean® PM Steels - the Comparison of Cutting Forces and Surface Roughness

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