Fracture and fatigue crack propagation properties of hardened 52100 steel

Beswick, John M.

doi:10.1007/bf02650283

Cited by 57 publications

(18 citation statements)

References 19 publications

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“…10 together with some results obtained by other researchers 8,20 . Results in the present work and by Beswick 20 fall very close to each other, but the remaining result by Shiozawa 8 falls below the above data. The present work and Beswick's work were carried out by using CT specimens in axial loading, but Shiozawa's work was performed in rotating bending.…”

Section: Resultssupporting

confidence: 88%

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Characteristic S–N properties of high‐carbon–chromium‐bearing steel under axial loading in long‐life fatigue

Sakai

Sato

Oguma

2002

Fatigue Fract Eng Mat Struct

311

235

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Owing to difficult economical conditions, machines and structures often have to be used beyond the design lifetime. In this study, fatigue properties of a bearing steel in the long‐life region were experimentally examined under cyclic axial loading. The complicated S–N behaviour was well explained as a combination of S–N curves for surface‐induced fracture and interior inclusion‐induced fracture. Fish‐eye marks were always observed on the fracture surfaces of specimens, which failed in the latter fracture mode, and an inclusion was found at the center of the fish‐eye. Finally, it was found that the fatigue fracture of this steel in the long‐life region occurred through the following three processes: (i) formation of the characteristic area as a fine granular area (FGA), (ii) crack propagation to form the fish‐eye and (iii) rapid crack propagation to cause the catastrophic fracture.

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Section: Resultssupporting

confidence: 88%

“…Relationship of d c /d N vs. Δ K was plotted in Fig. 10 together with some results obtained by other researchers 8,20 . Results in the present work and by Beswick 20 fall very close to each other, but the remaining result by Shiozawa 8 falls below the above data.…”

Section: Resultssupporting

confidence: 84%

Characteristic S–N properties of high‐carbon–chromium‐bearing steel under axial loading in long‐life fatigue

Sakai

Sato

Oguma

2002

Fatigue Fract Eng Mat Struct

311

235

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“…It is also the most popular bearing material [34]. After heat treatment typical for bearing applications (austenitisation at approximately 860 C followed by quenching and tempering at about 160 C) its microstructure consists of a tempered martensite matrix, 6-16 vol.% of retained austenite 1 [35,36] and approximately 3-4 vol.% of residual carbides 2 [26]. The latter are normally present as spheroidal cementite (M 3 C, where M stands for Fe or Cr) particles, about 0.3-1 mm in diameter [26,27,37,38].…”

Section: Introductionmentioning

confidence: 99%

The correlation between ZDDP tribofilm morphology and the microstructure of steel

Rydel

Pagkalis

Kadiric

et al. 2017

Tribology International

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The microstructure of most hard steels used in tribological applications is inhomogeneous at a micro-scale. This results in local variations in chemical composition and mechanical properties. On a similar scale, tribofilms formed by ZDDP and other anti-wear additives are commonly observed to exhibit a patch-like morphology. ZDDP tribofilms formed under controlled contact conditions on four di↵erent steel grades were carefully studied with a new AFM technique to analyse the relationship between the steel microstructure and the tribofilm morphology. Tribofilms were found to be thinner on residual carbides than on the martensitic matrix in all grades containing residual carbides. In most cases, the di↵erence in tribofilm thickness is larger than the carbide protrusion.

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“…Pode-se observar que o material que apresenta melhores propriedades quando ensaiado em condições dinâmicas, apresenta o valor mais baixo de tenacidade à fratura obtido num ensaio quasi estático. As conclusões de Beswick(68) sobre os resultados obtidos sugerem que não existe correlação direta entre a tenacidade à fratura medida através da norma ASTM E-399 e os ensaios de tenacidade à fratura dinâmica. Efeito da velocidade de ensaio na tenacidade à fratura dinâmica para amostras de aço AISI 52100, adaptado de Beswick(68).Os estudos de Beswick(68) em aço AISI 52100 em nenhum momento levaram em consideração o efeito do tamanho dos carbonetos nas propriedades mecânicas medidas.…”

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“…As conclusões de Beswick(68) sobre os resultados obtidos sugerem que não existe correlação direta entre a tenacidade à fratura medida através da norma ASTM E-399 e os ensaios de tenacidade à fratura dinâmica. Efeito da velocidade de ensaio na tenacidade à fratura dinâmica para amostras de aço AISI 52100, adaptado de Beswick(68).Os estudos de Beswick(68) em aço AISI 52100 em nenhum momento levaram em consideração o efeito do tamanho dos carbonetos nas propriedades mecânicas medidas. Os carbonetos são conhecidos como sítios para a nucleação de trincas, o material com carbonetos mais finos apresentará uma maior densidade de sítios para a nucleação de trincas.…”

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Investigação de novas rotas de tratamento térmico em aço para rolamento.

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Fracture and fatigue crack propagation properties of hardened 52100 steel

Cited by 57 publications

References 19 publications

Characteristic S–N properties of high‐carbon–chromium‐bearing steel under axial loading in long‐life fatigue

Characteristic S–N properties of high‐carbon–chromium‐bearing steel under axial loading in long‐life fatigue

The correlation between ZDDP tribofilm morphology and the microstructure of steel

Investigação de novas rotas de tratamento térmico em aço para rolamento.

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