Novel Fe-0.3Cr-0.4Mo-1.5Mn–3Ni-0.6C tool steel with superior properties under quasi-static and dynamic loading

Kochta, Fabian; Kühn, U.; Henschel, Sebastian; Giebeler, Lars; Gemming, Thomas; Neufeld, Kai; Leyens, Christoph; Krüger, Lutz; Hufenbach, J.

doi:10.1016/j.msea.2021.142156

Cited by 2 publications

(1 citation statement)

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“…Furthermore, the CC and LPBF specimens show engineering compressive stress–strain curves with a high degree of work hardening, which can be attributed to, among others, to the transformation of retained austenite into martensite. This phenomenon is known as transformation-induced plasticity (TRIP) and is characteristic for this type of high-carbon steels [ 41 , 43 , 44 ]. In order to provide evidence regarding the TRIP effect of the investigated alloy, compression tests up to a strain level of 10% were conducted, and subsequently the mass fractions of retained austenite and martensite were determined by XRD.…”

Section: Resultsmentioning

confidence: 99%

Approach to Estimate the Phase Formation and the Mechanical Properties of Alloys Processed by Laser Powder Bed Fusion via Casting

et al. 2022

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A high-performance tool steel with the nominal composition Fe85Cr4Mo8V2C1 (wt%) was processed by three different manufacturing techniques with rising cooling rates: conventional gravity casting, centrifugal casting and an additive manufacturing process, using laser powder bed fusion (LPBF). The resulting material of all processing routes reveals a microstructure, which is composed of martensite, austenite and carbides. However, comparing the size, the morphology and the weight fraction of the present phases, a significant difference of the gravity cast samples is evident, whereas the centrifugal cast material and the LPBF samples show certain commonalities leading finally to similar mechanical properties. This provides the opportunity to roughly estimate the mechanical properties of the material fabricated by LPBF. The major benefit arises from the required small material quantity and the low resources for the preparation of samples by centrifugal casting in comparison to the additive manufacturing process. Concluding, the present findings demonstrate the high attractiveness of centrifugal casting for the effective material screening and hence development of novel alloys adapted to LPBF-processing.

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Section: Resultsmentioning

confidence: 99%