Effect of microstructure on fatigue behavior of advanced high strength steels produced by quenching and partitioning and the role of retained austenite

Diego-Calderón, I. de; Calvillo, Pablo Rodríguez; Lara, A.; Molina-Aldareguia, J.M.; Petrov, Roumen; Knijf, Dorien De; Sabirov, I.

doi:10.1016/j.msea.2015.06.034

Cited by 70 publications

(56 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The surface is located to the left in the figure. The martensite plates are light coloured and 0.5-3 µm wide, this corresponds well with the results by de Diego-Calderón et al [38]. The retained austenite inclusions are visible as relatively round, dark structures with less than 1 µm width.…”

Section: Experimental Set-up Test Specimensupporting

confidence: 91%

Experimental Investigation of Shot Peening on Case Hardened SS2506 Gear Steel

Nordin

Alfredsson

2017

Exp Tech

View full text Add to dashboard Cite

Shot peening is a manufacturing process commonly used to increase fatigue life in components for the automotive and aircraft industry. In this paper the effect of shot peening is described for a case hardened gear steel. For gears there are three main factors from shot peening that influence fatigue life: residual stresses, microstructure and surface roughness. The paper describes an experimental series where these parameters were measured for common industrial shot peening settings. The aim was to show how several different measurement techniques and results correspond to each other for certain shot peening parameters. The aim was also to gather experimental results that can be used for verification of shot peening simulations. To simplify measurements and decrease variation, flat steel plates were used as targets. Residual stress, full width at half maximum (FWHM), retained austenite, surface roughness/topology, hardness and Barkhausen noise were measured and related to microstructural changes. The mean indentation diameter was measured for individual shots at low coverage of each intensity which was used to determine the average velocity of the media. The mean diameter and hardness of the shot peening media was also determined.

show abstract

Section: Experimental Set-up Test Specimensupporting

confidence: 91%

Experimental Investigation of Shot Peening on Case Hardened SS2506 Gear Steel

Nordin

Alfredsson

2017

Exp Tech

View full text Add to dashboard Cite

show abstract

“…Next-generation structural steels such as ultrahigh-strength transformation-induced plasticity (TRIP)-aided steels, i.e., "TRIP-aided martensitic (TM) steel" [2][3][4], "quenching and partitioning steel" [5,6] and "nanostructured bainitic steel" [7,8] are expected to be increasingly used for fabricating precision gears because of their high toughness and superior fatigue strength [3][4][5][6][7][8][9]. Sugimoto et al [10,11] reported that fine-particle peening (FPP) further increases the rotational bending and torsional fatigue strengths of heat-treated TM steel by imparting a significant hardness and compressive residual stress to the precision-gear surface layer.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vacuum-Carburizing Conditions on Surface-Hardened Layer Properties of Transformation-Induced Plasticity-Aided Martensitic Steel

Sugimoto

Hojo

Mizuno

2017

Metals

View full text Add to dashboard Cite

Abstract:The effects of carbon potential in vacuum-carburization on the surface-hardened layer properties of the 0.2%C-1.5%Si-1.5%Mn-1.0%Cr-0.05%Nb transformation-induced plasticity-aided martensitic steel were investigated for the fabrication of precision gears. The volume fraction of retained austenite and hardness in the surface hardened layer of the steel increased with increasing carbon potential. Subsequent fine-particle peening enhanced the hardness and the compressive residual stress via severe plastic deformation and strain-induced martensite transformation, especially under a high carbon potential. The severe plastic deformation mainly contributed to increased hardness and compressive residual stress and the contribution of the strain-induced martensitic transformation was relatively small.

show abstract

“…The higher stability of HT2I steel could be attributed, among other factors, to a more efficient carbon partitioning from bainite to austenite and, therefore, carbon enrichment of RA during the isothermal holding at the BIT stage . Moreover, the larger RA particles of HT3I steel along with the higher M s σ temperature may explain the reduced mechanical stability against transformation compared with HT2I steel, since the stability of RA is controlled not only by the local carbon level but also by the RA grain size . In the investigation, the morphology of RA has been taken into account by examination of the RA‐grain aspect ratio.…”

Section: Mechanical Behavior and Ra Transformationmentioning

confidence: 99%

Effect of retained austenite stability on cyclic deformation behavior of low‐alloy transformation‐induced plasticity steels

Christodoulou

Kermanidis

Haidemenopoulos

et al. 2019

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The retained austenite (RA) characteristics of Al‐containing TRIP700 steels have been manipulated using varying bainitic isothermal transformation (BIT) processing. The microstructural evolution was investigated using optical microscopy and quantitative image analysis, while the amount of transformed RA was evaluated with the saturation magnetization (SM) technique. Cyclic behavior is found to depend on the applied strain amplitude and stability of RA. At strain amplitudes with comparable elastic and plastic strain components, cyclic softening prevails, facilitated by more stable RA microstructures and Low Cycle Fatigue (LCF) performance benefits from a lower RA stability, which controls the amount of cyclic softening rate. With increasing plastic strain component, a transition to cyclic hardening is observed, and the transition strain increases with increasing RA stability. LCF performance deteriorates because of excessive cyclic strain hardening promoting martensitic transformation. The effect is accompanied by a transition from mixed dimple/cleavage to cleavage‐type fracture characteristics.

show abstract

Effect of microstructure on fatigue behavior of advanced high strength steels produced by quenching and partitioning and the role of retained austenite

Cited by 70 publications

References 50 publications

Experimental Investigation of Shot Peening on Case Hardened SS2506 Gear Steel

Experimental Investigation of Shot Peening on Case Hardened SS2506 Gear Steel

Effects of Vacuum-Carburizing Conditions on Surface-Hardened Layer Properties of Transformation-Induced Plasticity-Aided Martensitic Steel

Effect of retained austenite stability on cyclic deformation behavior of low‐alloy transformation‐induced plasticity steels

Contact Info

Product

Resources

About