Development of a new tool to generate compressive residual stress within a machined surface

Segawa, Toshiaki; Sasahara, Hiroyuki; Tsutsumi, Masaomi

doi:10.1016/j.ijmachtools.2004.03.010

Cited by 35 publications

(13 citation statements)

References 14 publications

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“…In the particular case of shot peening, Segawa et al [43] claim that despite the fact that this operation can change tensile residual stresses to compressive stresses, it presents the following drawbacks: it is an additional and time-consuming process and it is difficult to maintain the accuracy of complex components. These authors propose a burnishing tool to be used simultaneously with a cutter during the milling operation in order to induce compressive residual stresses on the machined part.…”

Section: Residual-stress Distributionmentioning

confidence: 99%

Surface Integrity

Abrão

Ribeiro

Davim

2011

Machining of Hard Materials

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Surface integrity comprises the study of the alterations induced during the manufacture of a component that might affect its properties and service performance. Therefore, additionally to geometric irregularities (surface texture and both dimensional and geometric deviations), the study on surface alterations (such as metallurgical alterations, cracks and residual stresses) induced by hard-part machining is of utmost importance, especially in the case of components subjected to dynamic loading. Consequently, this chapter is focused on the investigation of the influence of tool material and geometry and cutting parameters on the surface integrity of components subjected to hard-part machining and, when applicable, comparisons are drawn with grinding and non-conventional processes, especially electrical discharge machining (EDM). Geometric IrregularitiesOwing to the fact that in most cases hard-part machining is employed as an alternative to grinding, the requirements concerned with surface texture (microgeomet-__________________________________ A.M. Abrão

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Section: Residual-stress Distributionmentioning

confidence: 99%

Surface Integrity

Abrão

Ribeiro

Davim

2011

Machining of Hard Materials

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“…Residual stresses are another important factor to consider when improving the fatigue strength [12][13][14][15]. The crack initiation site of parts requires an adequate level of compressive residual stress within the machined surface to increase the fatigue strength.…”

Section: Discussionmentioning

confidence: 99%

“…Residual stress patterns induced by machining are critical for component fatigue life; it is generally agreed that surface tensile stress reduces fatigue strength and compressive residual stress improves it [12][13][14][15].…”

mentioning

confidence: 99%

Inclusions, Stress Concentrations and Surface Condition in Bending Fatigue of an H13 Tool Steel

Medvedeva¹,

Bergström

Gunnarsson³

2008

steel research international

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Combined effects of inclusions, surface condition and geometrical stress concentration on the fatigue strength of a tool steel have been studied. Bending fatigue testing was performed for milled tool components and smooth specimens produced from an experimental AISI H13 tool steel with varying additions of sulphur and oxygen. Inclusion distributions of the different test series were determined. Fracture surfaces after fatigue failures were studied in a scanning electron microscope. The sulphur content does not have a significant influence on the fatigue strength of the milled tool components in the range of 0.02 ‐ 0.09 wt%. A clear reduction in the fatigue strength is obtained for the smooth specimens when the steel becomes rich in inclusions. Here, the oxide type inclusions dominated as crack initiators and the effect of sulphides was smaller. The results demonstrate the reduced effect of inclusions on the fatigue strength in components with large stress concentrations and rough surfaces.

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“…Segawa et al (1) have proposed a cutting-burnishing combined process tool to generate compressive residual stress in a single operation without using any special devices. This tool consists of a cutting tool edge and a burnishing pin.…”

Section: Introductionmentioning

confidence: 99%

Temperature History and Metallographic Structure of 0.45%C Steel Processed by Frictional Stir Burnishing

Kiuchi

Sasahara

2010

JAMDSM

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Significant enhancement of hardness characteristics was achieved through the Frictional Stir Burnishing (FSB) process. The enhanced region was generated by the FSB process where the thickness and hardness were approximately 200 µm and 900 HV, respectively, under the conditions of spindle speed of 10000 min -1 , a feed rate of 200 mm/min and a processing load of 750 N. The processing temperature was approximately 600~750 ˚C under compressive stress condition. Although this temperature is lower than A 3 transform point (normally 780 ˚C), it is known that A 3 transform point decreases under the compressive stress condition. And after the tool passed, the temperature dropped rapidly. This process can be assumed to be the same as a quenching process. However, the obtained hardness value is harder than that of the regular quenched material. When the processing load was 500 N, extremely hard regions over 1000 HV were obtained. In this case, it is thought that the material was not transformed into martensite. It can be concluded that the severe stirring process of FSB caused the grain refinement.

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Development of a new tool to generate compressive residual stress within a machined surface

Cited by 35 publications

References 14 publications

Surface Integrity

Surface Integrity

Inclusions, Stress Concentrations and Surface Condition in Bending Fatigue of an H13 Tool Steel

Temperature History and Metallographic Structure of 0.45%C Steel Processed by Frictional Stir Burnishing

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