Fracture Assessment of Martempered and Quenched and Tempered Alloy Steel

Maciejewski, J.; Regulski, C.

doi:10.1007/s11668-009-9270-x

Cited by 3 publications

(2 citation statements)

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“…However, the first layer experiences phase transformation subject to reheating (tempering) phenomenon caused by subsequent layers [ 59 ]. It is known that the transgranular quasi-cleavage fracture mode is associated with the tempered martensite embrittlement (TME) mechanism, which occurs at the tempering temperature, ranging from 200 to 380 °C, in low/medium carbon and alloy steels due to the transformation of retained austenite at lath martensite boundaries [ 60 , 61 ]. This interlath austenite transforms to coarse cementite crystals, and cementite nucleates on the martensite boundaries, which induces large lattice distortions and a high density of dislocations that can act as crack nucleation sites and, therefore, reduces impact toughness and ductility [ 62 , 63 ].…”

Section: Resultsmentioning

confidence: 99%

Tensile Fracture Behavior and Failure Mechanism of Additively-Manufactured AISI 4140 Low Alloy Steel by Laser Engineered Net Shaping

et al. 2017

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AISI 4140 powder was directly deposited on AISI 4140 wrought substrate using laser engineered net shaping (LENS) to investigate the compatibility of a LENS-deposited part with the substrate. Tensile testing at room temperature was performed to evaluate the interface bond performance and fracture behavior of the test specimens. All the samples failed within the as-deposited zone, indicating that the interfacial bond is stronger than the interlayer bond inside the deposit. The fracture surfaces were analyzed using scanning electron microscopy (SEM) and energy disperse X-ray spectrometry (EDS). Results show that the tensile fracture failure of the as-deposited part is primarily affected by lack-of-fusion defects, carbide precipitation, and oxide particles inclusions, which causes premature failure of the deposit by deteriorating the mechanical properties and structural integrity.

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Section: Resultsmentioning

confidence: 99%

Tensile Fracture Behavior and Failure Mechanism of Additively-Manufactured AISI 4140 Low Alloy Steel by Laser Engineered Net Shaping

et al. 2017

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“…MacIejewski and Regulski [8] studied the fracture assessment of martempered and quenched and tempered AISI 4140 low alloy steel. e reported advantages of martempering include less distortion, elimination of quench cracking, improved fatigue resistance, and improved absorbed impact energy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Austempering and Martempering on the Properties of AISI 52100 Steel

et al. 2013

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The mechanical properties of steel decide its applicability for a particular condition. Heat treatment processes are commonly used to enhance the required properties of steel. The present work aims at experimentally investigating the effect of austempering and martempering on AISI 52100 steel. Different tests like microstructure analysis, hardness test, impact test, and wear test are carried out after heat treatment process. It was found that annealed steel was least hard and more wear prone, while martempered steel was hardest and least vulnerable to wear. Austempered steel had the highest impact strength and it is increased with soaking time up to certain level. Least wear rate is observed in martempered sample both in abrasion and dry sliding. However, least friction coefficient is shown by annealed samples.

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Caractérisation mécanique de l'acier faiblement allié 42CrMo4

Chaouch¹,

Sadok²

2010

Ann. Chim. Sci. Mat.

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Fracture Assessment of Martempered and Quenched and Tempered Alloy Steel

Cited by 3 publications

References 3 publications

Tensile Fracture Behavior and Failure Mechanism of Additively-Manufactured AISI 4140 Low Alloy Steel by Laser Engineered Net Shaping

Tensile Fracture Behavior and Failure Mechanism of Additively-Manufactured AISI 4140 Low Alloy Steel by Laser Engineered Net Shaping

Effect of Austempering and Martempering on the Properties of AISI 52100 Steel

Caractérisation mécanique de l'acier faiblement allié 42CrMo4

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