Einfluß der Oberflächenbeschaffenheit auf die Schwingfestigkeit von Aluminium‐Druckguß

Kurth, Bernhard; Bomas, H.; Mayr, P.

doi:10.1002/mawe.19950260209

Cited by 10 publications

(2 citation statements)

References 8 publications

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“…This can be explained by plastic deformation effects in the subsurface. Also for the die cast material GD-AlSi8Cu3 a significant increase of the load cycles by peening after milling was shown [10]. The surface treatment procedure influences crack formation and propagation by shutting surface near shrink holes and pores by strengthening the component's subsurface.…”

Section: Introductionmentioning

confidence: 93%

Development of Combined Manufacturing Technologies for High-Strength Structure Components

Denkena

Meyer

2007

AMR

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Novel manufacturing technologies for high-strength structure components of aluminium allow a local modification of material properties to respond to operational demands. Machining and finishing processes for changing material properties like deep rolling or rubbing are to be combined to a single process step. Intention is the controlled modification of the component’s properties by manipulation of its subsurface. For that purpose the essential understanding of interaction mechanisms of the basic processes turning, deep rolling and rubbing is necessary. Influences of tool geometry as well as process parameters on material properties are investigated. The results are to be extended by parameter studies, done by numerical simulation. Combined processes like “turnrolling” or “turn-rub-rolling” will be developed.

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Section: Introductionmentioning

confidence: 93%

Development of Combined Manufacturing Technologies for High-Strength Structure Components

Denkena

Meyer

2007

AMR

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“…This can be explained by plastic deformation effects in the subsurface. Also for the die cast material GD-AlSi8Cu3 a significant increase of the load cycles by peening after milling was shown [11]. The surface treatment procedure inhibits crack formation and propagation by shutting surface near shrink holes and pores by strengthening the component's subsurface.…”

Section: Introductionmentioning

confidence: 94%

Development of Combined Manufacturing Technologies for High-Strength Structural Components

Denkena

Breidenstein

León

et al. 2010

AMR

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Abstract. Novel manufacturing technologies for high-strength structural components of aluminium allow a local modification of material properties to respond to operational demands. Machining and finishing processes for changing material properties like deep rolling or rubbing are to be combined to a single process step. The intention is the controlled adjustment of the component's properties by the modification of its subsurface. For that purpose the essential understanding of the interaction mechanisms of the basic processes turning, deep rolling and rubbing is necessary. Influences of the tool geometry as well as of the process parameters on the material properties are investigated. The results will be extended by parameter studies within numerical simulations. Thereafter, combinations of the basic processes in process sequences are analyzed to their ability to modify the subsurface properties. In consideration of these results, a prototypic combined turn-rolling tool is developed Introduction Aluminium and its alloys are important construction materials for lightweight applications. High strength at low density of selected aluminium alloys enables the construction of a variety of structural and planar components [1,2]. Aluminium parts used in such a way must bear high wear and oscillating mechanical loads during application. In practice the most stressed regions in technical components are often found in the subsurface, e. g. by bending, torsion and corrosion loads. Therefore, the properties of the component's subsurface are of outstanding importance [3,4]. These properties are considerably influenced by the applied machining procedure. Different states of residual stress, hardness, surface roughness and microstructure can be realized. A controlled influence on the subsurface by the machining process can improve the component's properties and life cycle [5].

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Fatigue life prediction for pressure cast transmission housings using the strain life approach

Schön¹,

Varenkamp

2011

Materialwissenschaft Werkst

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Fatigue life prediction for pressure cast transmission housings using the strain life approach Schlüsselwörter: Örtliches Konzept / Aluminiumdruckguss / Spannungsgradient / Hochbeanspruchtes Volumen / Schadenssumme / Pressure cast transmission housings are structural components of complex shape, which have to fulfil, amongst others, the requirements of structural durability, saving as much weight as possible.The numerical proof of structural durability is carried out using the local strain approach. One challenge is to consider the inhomogenious material properties, as a consequence of the casting process. It shows, that local porosity is the determining factor for the components fatigue life. Coming from the experiences made using the basic version of the local strain approach the methods used to successfully adjust the procedure for calculating pressure cast components under constant and variable amplitudes are described.

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Einfluß der Oberflächenbeschaffenheit auf die Schwingfestigkeit von Aluminium‐Druckguß

Cited by 10 publications

References 8 publications

Development of Combined Manufacturing Technologies for High-Strength Structure Components

Development of Combined Manufacturing Technologies for High-Strength Structure Components

Development of Combined Manufacturing Technologies for High-Strength Structural Components

Fatigue life prediction for pressure cast transmission housings using the strain life approach

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