Analysis of Residual Stresses in High Speed Milled Aluminum Alloys

Vottero, S.; Díaz, F. V.; Mammana, C. A.; Guidobono, A. P. M.

doi:10.19026/rjaset.14.4154

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the influence of the material, the normal components introduced in the 6082-T6 alloy proved to be more compressive. These results confirm what was reported in previous works (Díaz et al, 2010;Vottero et al, 2017), in which other combinations of process parameters were evaluated.…”

Section: Resultssupporting

confidence: 92%

“…Recently, Berry (2006, 2009) developed a technique based on the measurement of the changes in the spacing of the micro-indents, which occur when the machined component is subjected to a distension treatment. More recently this method has been optimized, which allowed to carry out different studies in order to analyze the behavior of the normal and tangential components of residual stress in all directions, for the case of different aluminum alloys milled at high speed (Díaz et al, 2010;Vottero et al, 2017). It is important to note that this optimized approach proposes the use of a universal measuring machine, which leads to a very low measurement error (±0.9 MPa) when it is compared to that associated with the most used techniques such as X-ray diffraction (Noyan and Cohen, 1987;Prevéy, 1987) and the hole-drilling method (Rendler and Vigness, 1966;Gupta, 1973;Díaz et al, 2001), which is approximately ±25 MPa.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination and Analysis of Residual Stresses Induced by High Speed Milling Using a Micro-Indent Method

Vottero¹,

Díaz²,

Mammana³

et al. 2018

RJASET

Self Cite

View full text Add to dashboard Cite

The purpose of this work is to determine and analyze residual stress normal components and anisotropy degrees introduced by high-speed milling in specimens of AA 6082-T6 and AA 7075-T6 aluminum alloys. At each machined sample, the climb and conventional cutting zones were evaluated and compared. This paper includes a comprehensive study of thermal and mechanical effects associated with the residual stress introduction. For normal components determination, an optimized micro-indent method was used. Each measurement sequence from this approach was performed using a high accuracy measuring machine and classified according to thermal deviations measured. The residual displacements were determined with an absolute error down to ±300 nm. The normal components analysis allowed to infer the strong influence of the rolling process previous to high-speed milling and besides, the stress levels associated with thermal effects (higher in AA 7075-T6). Finally, the lower residual stress anisotropy degrees in both materials observed in the conventional cutting zone would indicate more homogenous local plastic stretching in this region for all planar directions.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Determination and Analysis of Residual Stresses Induced by High Speed Milling Using a Micro-Indent Method

Vottero¹,

Díaz²,

Mammana³

et al. 2018

RJASET

Self Cite

View full text Add to dashboard Cite

show abstract

“…Then, this technique was improved by integrating a universal measuring machine, which is a multipurpose, robust and highly accurate measurement tool [14]. Afterwards, this optimized technique allowed determining, with high accuracy, residual stress fields introduced from milling operations [15]- [17].…”

Section: Introductionmentioning

confidence: 99%

On the Correlation Between Residual Stresses and Displacements of the Polycrystalline Lattice: an Experimental Strategy

Díaz

Rosso

Walker

et al. 2020

International Journal of Mechanics

View full text Add to dashboard Cite

This work aims to propose a micro-indent method to evaluate the correlation between the relaxation of residual stresses and the shape changes of the polycrystalline lattice in specimens of a rolled plate of AA 6082-T6 aluminium alloy. Rolling strengthens the surface of the plate by introducing compressive residual stresses. Then, these stresses are relaxed by thermal distension. The method of micro-indents allowed measuring residual displacements with an error below ± 300 nm. The results obtained reveal that the rolling direction plays a vital role in terms of asymmetric expansion of the lattice. Furthermore, the lattice accumulates and restores elastic strain energy in the clockwise and anti-clockwise direction of rotation, alternatively. Finally, when the stress release process is finishing, the lattice adjusts the angle of rotation to approximate to the initial geometric shape.

show abstract

Analysis of Residual Stresses in High Speed Milled Aluminum Alloys

Cited by 2 publications

References 0 publications

Determination and Analysis of Residual Stresses Induced by High Speed Milling Using a Micro-Indent Method

Determination and Analysis of Residual Stresses Induced by High Speed Milling Using a Micro-Indent Method

On the Correlation Between Residual Stresses and Displacements of the Polycrystalline Lattice: an Experimental Strategy

Contact Info

Product

Resources

About