Experimental Studies on the Effect of Destructive Reagents on Metal Structural Elements

IF 0.9 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Powder Metallurgy and Metal Ceramics Pub Date : 2024-10-22 DOI:10.1007/s11106-024-00443-3

I.B. Chepkov, S.V. Lapitsky, A.V. Kuchinskiy, O.B. Kuchinska, M.V. Zirka, I.V. Zvershkhovskiy, A.V. Hurnovich, O.V. Dokuchaev, A.M. Andriyenko, B.O. Oliarnik

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Abstract

Experimental studies were conducted to refine the theoretical provisions concerning the mechanism and kinetics of penetration for a metal melt consisting of destructive reagents, such as gallium, indium, tin, and zinc (destructive composition), along the grain boundaries in unstressed metal samples. It was experimentally confirmed that the penetration rate of the destructive composition was limited by processes at the liquid phase front, including dissolution of intergranular boundary areas, recrystallization to form solid solution crystals, and opening of new crack areas under the pressure of growing crystals. The experimental findings indicated a significant decrease in the strength of aluminum alloys resulting from the effect of the destructive composition. Analytical dependences and corresponding empirical coefficients characterizing the effects of the destructive composition on structural aluminum alloy elements under tensile loads were derived. These empirical coefficients enable the determination of conditions under which aluminum alloy structures fail under the influence of destructive compounds, considering the tensile stresses. The effect of the destructive alloy on the onset of fatigue damage and the durability of aluminum alloy structures under asymmetric cyclic stresses was examined. Significant reduction in the fatigue strength of aluminum structures under the influence of the destructive composition was experimentally confirmed.

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破坏性试剂对金属结构元素影响的实验研究

为了完善有关破坏性试剂（如镓、铟、锡和锌（破坏性成分））在未受应力的金属样品中沿晶界渗透的机制和动力学的理论规定，我们进行了实验研究。实验证实，破坏性成分的渗透率受到液相前沿过程的限制，包括晶间边界区域的溶解、再结晶形成固溶体晶体，以及在晶体生长的压力下打开新的裂纹区域。实验结果表明，由于破坏性成分的影响，铝合金的强度显著下降。研究得出了分析依赖关系和相应的经验系数，这些系数描述了破坏性成分在拉伸载荷下对铝合金结构元素的影响。考虑到拉伸应力，这些经验系数能够确定铝合金结构在破坏性化合物影响下的失效条件。在非对称循环应力下，研究了破坏性合金对铝合金结构疲劳损伤的发生和耐久性的影响。实验证实，在破坏性成分的影响下，铝合金结构的疲劳强度显著降低。

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来源期刊

Powder Metallurgy and Metal Ceramics 工程技术-材料科学：硅酸盐

CiteScore

1.90

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Powder Metallurgy and Metal Ceramics covers topics of the theory, manufacturing technology, and properties of powder; technology of forming processes; the technology of sintering, heat treatment, and thermo-chemical treatment; properties of sintered materials; and testing methods.