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Coherency and Grain Size Effects on Solidification Crack Growth in Aluminum Welds

Type
Articles dans des revues avec comité de lecture
Auteur
CONIGLIO, Nicolas
211915 Mechanics surfaces and materials processing [MSMP]
CROSS, Carl E.

URI
http://hdl.handle.net/10985/8434
DOI
10.3139/120.110599
Date
2014
Journal
Materials Testing

Résumé

A mass-balance model has been evaluated that estimates the critical conditions for sustaining continuous crack growth in the weld mushy zone. With the aid of a strain partition model, the critical local strain rate (across the weld) has been related to the critical grain boundary deformation rate needed for crack growth. In the present work, these two models are applied to aluminum welds to investigate the theoretical effects of several metallurgical factors on solidification cracking susceptibility. Calculations quantify the improved cracking resistance associated with a smaller coherent temperature range, grain refinement, high solid fraction at coherency, and rapid development of strength.

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MSMP_MATEST_Coniglio_2014.pdf
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Coherency and Grain Size Effects ...
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Documents liés

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  • Effect of weld travel speed on solidification cracking behavior. Part 2: testing conditions and metrics 
    CONIGLIO, N.; CROSS, C. E. (springer, 2020)
    Solidification cracking is a weld defect common to certain susceptible alloys rendering many of them unweldable. It forms and grows continuously behind a moving weld pool within the two-phase mushy zone and involves a ...
  • Effect of weld travel speed on solidification cracking behavior. Part 1: weld metal characteristics 
    CONIGLIO, N.; CROSS, C. E. (Springer Science and Business Media LLC, 2020)
    Solidification cracking is a weld defect common to certain susceptible alloys rendering many of them unweldable. It forms and grows continuously behind a moving weld pool within the two-phase mushy zone and involves a ...
  • Effect of weld travel speed on solidification cracking behavior. Part 3: modeling 
    CONIGLIO, N.; CROSS, C. E. (Springer Science and Business Media LLC, 2020)
    Solidification cracking is a weld defect common to certain susceptible alloys rendering many of them unweldable. It forms and grows continuously behind a moving weld pool within the two-phase mushy zone and involves a ...
  • Effect of nano-penning surface texturing on self-cleaning function 
    CONIGLIO, Nicolas; MEZGHANI, Sabeur; EL MANSORI, Mohamed; CABRERO, J. (Elsevier, 2018)
    Surface texturation at micro- and meso-scales plays an important role in applications where cosmetic, aesthetic and self-cleaning functionalities are specified. This research paper deals with a multiscale surface, in which ...
  • Towards Establishment of Weldability Test Standards for Hydrogen Assisted Cold Cracking 
    KURJI, Rahim; CONIGLIO, Nicolas (Springer, 2015)
    Industry and research have long desired the establishment of standards for weldability testing in regards to hydrogen assisted cold cracking formation. This would have the obvious advantage of allowing data to be reliably ...

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