Validating quench stresses in complex aluminium components

Hossain, Sayeed; Stuhr, U.; Robinson, J. S.; Truman, Christopher E

doi:10.1007/s00170-021-06831-y

Cited by 1 publication

(1 citation statement)

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“…The POLDI experiment was part of a larger investigation, which included simulation of the quench and residual stress prediction using finite element analysis. 19,20 As such, the pumps did not receive any artificial aging. The SALSA experiment did include an aging treatment of 12 h at 170°C, and it has been demonstrated on the pumps themselves and using test samples that the creep associated with this treatment can account for most of the difference.…”

Section: Discussionmentioning

confidence: 99%

Residual stresses in the aluminium alloy 2014A subject to PAG quenching and vibratory stress relief

Robinson

Hossain

Truman

2021

The Journal of Strain Analysis for Engineering Design

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Generic hollow pump bodies made from aluminium alloy 2014A forgings have been solution heat treated and quenched into either cold water or polyalkylene glycol (PAG) solutions. An industry standard PAG type synthetic quenchant was evaluated, and the influence of two concentrations of the PAG solution on residual stress in the pump bodies was characterised, using neutron and X-ray diffraction. These residual stresses were then compared to those resulting after a pump in the as quenched condition was subject to a widely known but controversial commercial vibratory stress relieving procedure. The use of neutron diffraction allowed the through thickness residual stresses to be evaluated in the pumps. Results demonstrate that PAG quenching is highly effective at significantly reducing residual stress when compared to cold water quenching, but the impact is non uniform and cannot be simply quantified. In this investigation, we prove the effect of vibratory stress relief is negligible, and much less than that achieved by PAG quenching.

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Section: Discussionmentioning

confidence: 99%