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固液共存区开尔芬体的力学行为可以解释为高弹性模量的固相与粘性液态金属的联合作用,这种联合作用直接影响热裂纹的形成与发展。因此,深入研究开尔芬体的力学行为将为我们从流变学角度理解热裂纹的形成机制提供新思路。现已发现,稀土能不同程度地降低合金的热裂倾向性,提高准固态强度并使流变参数值提高。因此,研究稀土对开尔芬体力学行为的影响将为进一步弄清开尔芬体的力学特征提供必要的途径。
The mechanical behavior of Kelphen in solid-liquid coexisting zone can be interpreted as the combined effect of solid phase and viscous liquid metal with high elastic modulus. This combined effect directly affects the formation and development of hot cracks. Therefore, in-depth study of the mechanical behavior of Kelp body will provide new ideas for us to understand the formation mechanism of hot cracks from the rheological point of view. It has been found that RE can reduce the hot cracking tendency of alloys to some extent, improve the quasi-solid strength and improve the rheological parameters. Therefore, studying the influence of rare earth on the kinetic behavior of Kelphen will provide the necessary ways to further understand the mechanical characteristics of Kelphen body.