Effect of Carbide Precipitation on the Structure and Hardness in the Heat-Affected Zone of Hadfield Steel After Post-Cooling Treatments

Curiel-Reyna, E.; Contreras, Juan; Rangel-Ortis, T.; Herrera, Ana M.; Baños, L.; Real, Alicia Del; Rodrı́guez, Mario

doi:10.1080/10426910701524352

Cited by 33 publications

(8 citation statements)

References 3 publications

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“…5). The carbides that may be cementite and/or manganese carbide (M 3 C) possess very high values of hardness [14][15][16]. The hardness of such carbides is well established and reported to be between 910 and 1050 HV [15].…”

Section: Resultsmentioning

confidence: 99%

A Study of Premature Failure of Crusher Jaws

Olawale

Ibitoye

Shittu

et al. 2011

J Fail. Anal. and Preven.

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In this article, we report the outcome of an investigation made to uncover the premature fracture of crusher jaws produced in a local foundry. A crusher jaw that had failed while in service was studied through metallographic techniques to determine the cause of the failure. Our investigation revealed that the reason for the fracture was the presence of large carbides at the grain boundaries and in the grain matrix. This led to the formation of microcracks that propagated along the grain boundaries under in-service working forces. It is also believed that the precipitation of carbides at the grain boundaries may have occurred because of improper heat treatment, but not because of a deficiency in composition.

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Section: Resultsmentioning

confidence: 99%

A Study of Premature Failure of Crusher Jaws

Olawale

Ibitoye

Shittu

et al. 2011

J Fail. Anal. and Preven.

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“…Baja Hadfield Mn 12 atau baja mangan 12 (manganese steel) adalah besi yang memiliki komposisi 1,0-1,4% C dan 10-14% Mn dimana rasio komposisi C:Mn dipertahankan sebesar 1:10 [1]- [3]. Baja ini ditemukan pada tahun 1883 oleh Sir Robert Hadfield dari Sheffield Inggris [1], [2].…”

Section: Pendahuluanunclassified

Peningkatan Nilai Impak Baja Hadfield Mn 12 Melalui Proses Perlakuan Panas Homogenisasi Bertahap

Hidayat¹,

Bandanadjaja²

2018

JETM

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Hadfield manganese steel is the steel with a composition of 1.0-1.4% C and 10-14% Mn, where the C: Mn ratio is made at 1:10. In as-cast conditions, the steel has a structure of carbide (Fe, Mn) 3C at the grain boundary, formed during slow cooling in the sand mold. The carbide existence can cause brittle properties of the material and needs to be eliminated by a heat treatment process that is homogenization (or solution treatment). In this study, a stepped heat treatment process was carried out by giving preheating at temperatures below the austenitizing temperature of 600 oC and 700 oC. The austenitizing temperature is given lower than the conventional method which usually uses 1050 oC, wherein this study austenitizing heating was given at 980 oC. Rapid quenching is performed using water with agitation or stirring to ensure that the cooling rate is fast enough to generate a 100% austenite structure. The results achieved that the sample with a stepped heat treatment process with a preheating temperature of 600 oC and followed by austenitizing of 980 oC could perform finer austenite grains, with the highest impact value of 255 Joules. A fracture of the impact sample resulting very ductile behavior which can be seen that the impact sample is not completely broken.

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“…Although 7Cr17MoV special stainless has been widely applied as a cutlery material due to its superior performance compared to that of traditional stainless steel, studies on 7Cr17MoV as a cutlery material are scarce. Carbides are the important factors that affect the performance of the steel due to high carbon content of 7Cr17MoV [5][6][7]. Specifically, the carbides will be altered during the rolling process, which will crucially affect secondary hardening.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cold Rolling on Morphology of Carbides and Properties of 7Cr17MoV Stainless Steel

Yao

Li³

et al. 2014

Materials and Manufacturing Processes

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The evolution of the carbides and mechanical properties of 7Cr17MoV stainless steel used as cutlery material during cold rolling was investigated in this study. The results demonstrate that the microstructure of the rolled steel is composed of pearlite and spheroidal carbides. After cold rolling, the aggregation of carbides was no longer evident, and the carbides appeared to be small in size and uniformly distributed, whereas carbides in hot-rolled strips are clearly aggregated. Decreasing the thickness of the cold-rolled strips decreased the size of the carbide particles while increasing their number, which improved the particle distribution. A large number of fine, even nano-scaled carbides were observed in the material. The carbide phase, which primarily consisted of M 23 C 6 , did not change during cold rolling and annealing. The tensile strength and yield strength first decreased and then increased, and the elongation increased as the thickness of the cold-rolled strips decreased. Dimples and inclusion particles were readily observed upon tensile fracture. The inclusions are identified to be primarily carbides and oxide inclusions.

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Effect of Carbide Precipitation on the Structure and Hardness in the Heat-Affected Zone of Hadfield Steel After Post-Cooling Treatments

Cited by 33 publications

References 3 publications

A Study of Premature Failure of Crusher Jaws

A Study of Premature Failure of Crusher Jaws

Peningkatan Nilai Impak Baja Hadfield Mn 12 Melalui Proses Perlakuan Panas Homogenisasi Bertahap

Effect of Cold Rolling on Morphology of Carbides and Properties of 7Cr17MoV Stainless Steel

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