The influence of surface finish and strain hardening on near-surface residual stress and the friction and wear behavior of A2, D2 and CPM-10V tool steels

Poggie, Robert A.; Wert, J.J.

doi:10.1016/0043-1648(91)90374-4

Cited by 26 publications

(15 citation statements)

References 7 publications

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“…Compared to the three types of surface machining stresses as proposed by Parrish [10], the existing RS correspond rather to type III, thus, representing the ideal case of surface residual stresses, which can be attributed to the obviously good lubrication by the vegetable oil [14] and the avoidance of heat generation. The RS results are in good agreement with studies by Poggie et al [13]. In order to enable comparison of fatigue behavior of the specimen with the high RS to "stress-free" specimens it was tried to eliminate the RS.…”

Section: Residual Stressessupporting

confidence: 79%

“…The extent of the reduction was dependent on the volume of the material removed. Poggie et al [13] claimed that the decreased RS "result from subsequent layers of material being removed in a non-abusive fashion". Thus, underlying material without significant RS is then exposed.…”

Section: Introductionmentioning

confidence: 98%

“…For example, increasing the cutting speed was found to reduce the amount of compressive stresses probably due to thermal effects. Poggie et al [13] investigated the influence of surface finish on surface RS, friction and wear behavior for AISI A2, D2, and PM variant tool steels. Those authors claimed that grinding with 62 grit aluminum oxide caused high compressive RS at the surface.…”

Section: Introductionmentioning

confidence: 99%

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Influence of surface residual stresses on gigacycle fatigue response of high chromium cold work tool steel

Sohar¹,

Betzwar-Kotas

Gierl

et al. 2008

Materialwissenschaft Werkst

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The effect of surface compressive residual stresses (RS) induced by surface grinding and polishing on the gigacycle fatigue behavior of medium-carbon high-chromium alloy cold work tool steel was evaluated. Two test series were performed: Specimens of series I revealed high compressive RS of about -800 MPa at the surface, resulting from grinding with fine emery paper, which treatment had definitely a beneficial influence on the fatigue endurance strength. The existence of surface RS was also revealed to be responsible for the location of the fatigue crack initiation. High compressive RS favored internal crack origins. In this case crack nucleation sites were primary carbide clusters in the interior of the specimen, forming so-called fish-eyes at the fracture surface. In contrast, specimens of test series II had only very low RS, which enabled crack initiation near/at the surface at primary carbides/clusters. Furthermore, it has been shown that the high initial RS are prone to partial relaxation through cyclic loading for which the mechanisms are currently unknown. In this case near-surface induced failure was obtained. It was possible to confirm the experimentally obtained data by the use of the concept of local fatigue strength as function of effective RS. The relaxation of high initial RS was experimentally confirmed through RS measurements at runout specimens (10 10 cycles without failure

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Section: Residual Stressessupporting

confidence: 79%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of surface residual stresses on gigacycle fatigue response of high chromium cold work tool steel

Sohar¹,

Betzwar-Kotas

Gierl

et al. 2008

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…The 'more tensile' residual stress at the surface in the transverse (grinding) direction would be expected [41][42][43]; however, the higher maximum tensile residual stress in the longitudinal direction is contrary to previous work [41,42]. This may be a result of the need to balance the surface compressive residual stress; this change of sign near the surface in the longitudinal direction has also not been reported in other work.…”

Section: Residual Stress Profiles After Grindingcontrasting

confidence: 56%

The effect of shot peening on notched low cycle fatigue

Soady

Mellor

Shackleton

et al. 2011

Materials Science and Engineering: A

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The improvement in low cycle fatigue life created by shot peening ferritic heat resistant steel was investigated in components of varying geometries based on those found in conventional power station steam turbine blades. It was found that the shape of the component did not affect the efficacy of the shot peening process, which was found to be beneficial even under the high stress amplitude three point bend loads applied. Furthermore, by varying the shot peening process parameters and considering fatigue life it has been shown that the three surface effects of shot peening; roughening, strain hardening and the generation of a compressive residual stress field must be included in remnant life models as physically separate entities. The compressive residual stress field during plane bending low cycle fatigue has been experimentally determined using X-ray diffraction at varying life fractions and found to be retained in a direction parallel to that of loading and to only relax to 80% of its original magnitude in a direction orthogonal to loading. This result, which contributes to the retention of fatigue life improvement in low cycle fatigue conditions, has been discussed in light of the specific stress distribution applied to the components. The ultimate aim of the research is to apply these results in a life assessment methodology which can be used to justify a reduction in the length of scheduled plant overhauls. This will result in significant cost savings for the generating utility. KeywordsLow cycle fatigue, stress concentration, shot peening, residual stresses, ferritic heat resisting

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“…The residual stress as a representative of hardness is originally induced by the following sources:  Martensitic transformation below the surface  Plastic flow of material on the surface and the adjacent zones as a result of thermal stresses which are caused by heat generation during grinding operation  Plastic deformation at the workpiece surface due to the forces of abrasive grits (Barbacki, Kawalec et al 2003, Balart, Bouzina et al 2004). Plastic deformation beneath the surface is actually generated by characteristics of grinding, such as grit size, process parameters, and material properties (Poggie and Wert 1991). As AISI1045 steel used in this study, has low hardenability due to low percentage of carbon, and the material removal condition were not excessive in contact zone, it seems too hard to reach a martensitic microstructure.…”

Section: Metallographic and Hardness Analysismentioning

confidence: 99%

Surface hardness improvement in surface grinding process using combined Taguchi method and regression analysis

Shahri

Akbari

Mahdavinejad

et al. 2018

JAMDSM

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This study has implemented a combined Taguchi method and regression analysis to optimize grinding parameters to enhance the superficial hardness of workpiece. The workpiece material is AISI1045 annealed steel and the process parameters include depth of cut, wheel speed, workpiece speed, cross feed, and mode of dressing. The DOE technique is used to find out the number of experiments by using Taguchi's L27 which includes five parameters (depth of cut, wheel speed, workpiece speed, cross feed, and mode of dressing) at three levels. By applying the mean response and signal to noise ratio (SNR), the best optimal grinding condition has been reached at D3/S3/W2/F2/M1 i.e. depth of cut is 0.03 mm, wheel speed is 32 m/s, workpiece speed is 10 m/min, cross feed is 5 mm/rev, and mode of dressing is fine. Based on the ANOVA, the significance and percentage contribution of each parameter is determined. It has been revealed that depth of cut has maximum contribution on surface hardness. The mathematical model of surface hardness has been developed using regression analysis as a function of the above mentioned independent variables. A confirmation experiment, as final step, has been carried out with 94.5% confidence level to certify optimized result.

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The influence of surface finish and strain hardening on near-surface residual stress and the friction and wear behavior of A2, D2 and CPM-10V tool steels

Cited by 26 publications

References 7 publications

Influence of surface residual stresses on gigacycle fatigue response of high chromium cold work tool steel

Influence of surface residual stresses on gigacycle fatigue response of high chromium cold work tool steel

The effect of shot peening on notched low cycle fatigue

Surface hardness improvement in surface grinding process using combined Taguchi method and regression analysis

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