Improvement of the technological plasticity of KhN56VMTYu-VD alloy

Conclusions The maximum technological plasticity of the KhN56VMTYu-VD alloy in the two-phase state is achieved after heat treatment by the following method: hardening at 1120°C (2 h) in air+aging at 975°C (2 h) with cooling in water.Kulebaksk S. M. Kirov Metallurgical Plant. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 40–42, March, 1981.     

Cr20Ni80电热合金电渣重熔微观组织研究

采用ANSYS软件研究了冷却系数对Cr20Ni80电热合金电渣重熔铸锭温度分布的影响,采用Pro CAST软件中的CAF模块研究了冷却系数以及形核过冷度对Cr20Ni80电热合金铸锭微观组织的影响,并将模拟结果与实际生产的铸锭微观组织进行了比较分析。结果表明,Cr20Ni80电热合金电渣重熔铸锭的温度随冷却系数以及形核过冷度的增加而降低,柱状晶比例逐渐增大,铸锭底部的三角形晶区域也随着扩大。实际生产的Cr20Ni80电热合金电渣重熔的铸锭组织形貌与模拟结果比较接近。     

Recrystallization of nickel alloy KhN62BMKTYu during hot deformation and quenching

Conclusions Structural diagrams of recrystallization plotted in coordinates of temperature and deformation indicate regions of unrecrystallized, mixed, and completely recrystallized structure after deformation and quenching of alloy KhN62BMKTYu. The structure is polygonal in unrecrystallized sections after quenching from 1050–1080°.All-Union Institute of Light Alloys. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 55–57, August, 1982.     

Effects of electrode immersion depth and remelting rate on electroslag remelting process

In the electroslag remelting process, the electrode molten state is a critical factor determining the ingot quality, while the electrode immersion depth and melting rate are key factors for the stability of the electroslag re-melting process. Studies were carried out to investigate the microscopic and macroscopic effects of electrode immersion depth and melting rate on the potential distribution and heat density in the slag bath, and on the depth and shape of the molten bath. Based on the finite element method and the numerical solution method, the effect of the electrode immersion depth on the slag bath heat density was researched; the relationship between the electrode immersion depth and the slag resistance was obtained; and the unsteady-state model of the solidification process of the re-melting ingot was solved using the finite difference method. The mathematical model and physical model of the electrode melting process were established and solved; and the corresponding curves between the electrode molten-state and slag-bath physical parameters were obtained. The experimental results verified the simulated results studied in this paper.     

Effect of heat treatment on the structure and properties of sheets from alloy KhN56VMTYu

Results of a study of the effect of various regimes of heat treatment on the structure and mechanical properties of sheets from intensely aging nickel alloy KhN56VMTYu used for force parts of gas turbine engines (GTE) are presented.