Solidification Mechanics Criterion for Casting Hot Tearing
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摘要: 對當前已提出的有關熱裂判據進行了分析;基于實驗結果及力學強度理論揭示了傳統熱裂應變理論的不足,提出了熱裂為本質塑性斷裂及熱裂勢的概念,并建立了其凝固力學判據。Abstract: The hot tearing criteria presented up to now have been comprehensively analysed in the paper. Based on the experimental results and the analysis through the mechanical strength theories, the unreasonable aspect of the customary strain theory of hot tearing is revealed. It is pointed out that the hot tearing is a kind of plastic fracture in essential. The hot tearing potential is defined, and the solidification mechanics criterion is put forward consequently.
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Key words:
- alloy /
- solidification /
- hot tearing/hot tearing potential /
- criterion
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