Crack prediction for a partially solidified lead-free bronze casting using thermal stress analysis

Matsushita, A.; Nakazawa, Tomoaki; Okane, Toshimitsu; Yoshida, Makoto

doi:10.1016/j.jmatprotec.2017.05.022

Cited by 10 publications

(1 citation statement)

References 12 publications

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“…As of now, tests have been conducted on several aluminum alloys in this state to obtain their mechanical properties, and the corresponding constitutive equations have been created. Unfortunately, rheological behaviors of the alloys have not been obtained what is mainly because the rheological properties are generally obtained using relations between steady-state stress and strain rate in tensile conditions, and the brittleness of the partially solidified alloys makes them difficult to obtain [3]. In our future work, we intend to exploit thermal stress analysis and a relation between temperature and a solid fraction.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis in solid-liquid parts of solidifying castings

2019

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In the paper, we present results of stress analysis in domains which are a mixture of solid and liquid phases. Such mixtures occur in solidifying castings and are a result of forming a structure with solid skeleton and filling of a liquid phase. In this structure, stress occurs due to the appearance of temperature gradients, different values of material properties for the solid and liquid phase, and the appearance of friction forces between the solidified part of the casting and the mold on a macroscopic scale. This can lead to casting defects, such as hot cracking. The results are obtained with the use of a authors computer program based on the Finite Element Method. The stress analysis takes into account the elastic-plastic state of considered computational area. The presented results are focused on the microscopic scale, for which a finite element mesh is created which imitates the growing grains of the metal alloy in the casting, on the basis of macroscopic parameters.

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Section: Introductionmentioning

confidence: 99%