title: Ð¤Ð¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÑÐºÑÑÑÐ½Ð¾-ÑÐ°Ð·Ð¾Ð²Ð¾Ð³Ð¾ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ Ð² ÑÑÐ´Ð¾ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÑÐ°Ð»ÑÑ Ð¿ÑÐ¸ Ð¿ÑÑÐ¼Ð¾Ð¼ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ð¼ Ð²ÑÑÐ°ÑÐ¸Ð²Ð°Ð½Ð¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Formation of the structural-phase state in shipbuilding steels during Direct Laser Deposition
Creators: name: Ð Ð¾ÑÐ¸Ð½Ð°, ÐÐµÑÐ¾Ð½Ð¸ÐºÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð¿ÑÑÐ¼Ð¾Ðµ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ðµ Ð²ÑÑÐ°ÑÐ¸Ð²Ð°Ð½Ð¸Ðµ
Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½ÑÐµ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸
Ð¼Ð°ÑÑÐµÐ½ÑÐ¸ÑÐ½Ð¾-ÑÑÐ°ÑÐµÑÑÐ¸Ðµ ÑÑÐ°Ð»Ð¸
ÑÐµÑÐ¼Ð¾Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ°
Ð¼Ð¸ÐºÑÐ¾-ÑÐ²ÐµÑÐ´Ð¾ÑÑÑ
direct laser deposition
additive manufacturing
maraging steels
heat treatment
microhardness

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description: The theme of the final qualifying work: âFormation of the structural-phase state in shipbuilding steels during Direct Laser Depositionâ. This work is devoted to the study of the structural-phase state of martensitic-aging steels obtained by direct laser cultivation, in particular 06Cr15Ni4CuMo and the development of a heat treatment regime. The tasks of the work include the study of studies on the heat treatment of maraging; the selection of modes for heat treatment; the study of the structure of samples after homogenization, tempering and their mechanical properties. Based on the results of the conducted research, choose the mode that allows to obtain the best mechanical characteristics. As a result, homogenization of samples was carried out at holding temperatures of 1000, 1100 and 1200 Â°C and an annealing time of 1, 2, 4 and 6 hours. The selection of the tempering mode was carried out. The influence of temperature and time on the development and growth of new grains, the formationand growth of secondary phases and the change in the microstructure are studied. The mechanical properties of the samples, such as micro-hardness, strength, and ductility, were studied.As a result of the final qualification work, the recommended mode is a heat treatment consisting of homogenization (T=1200Â°C, t=6h), quenching (T=1060Â°C, t=3h) and subsequent triple tempering (T=620-625Â°C, t=5h), which forms a finely dispersed structure of tempered martensite, providing satisfactory mechanical properties.