Page 10 - 数值模拟驱动的高温合金热加工技术

PR E F AC E

Hot processing refers to the process of heating metal or alloy materials to a
certain temperature and changing their shape, size, internal microstructure, and

mechanical properties through plastic deformation, heat treatment, or casting to
meet specific usage requirements. Hot processing of large forgings usually includes
processes such as heating, forging, welding, and heat treatment. Heat treatment

is a major energy consumer with a large consumption base, among which the
heating process is the main energy consumption link, accounting for 35% to 50%

of the total energy consumption. Energy conservation and emission reduction play
an important role in heat treatment processes. To achieve energy conservation,
improve production efficiency, and reduce costs, the improvement of production

and technical management level is an important measure.
With the development of industrial technology, high-temperature alloys

have been widely used in aviation, aerospace, energy and other fields. However,
due to long-term operation in high temperature and high stress environments,
high-temperature alloys may experience thermal fatigue damage, leading to a

decrease in material properties or even failure, which poses many challenges to
engineering practice. Therefore, studying the thermal fatigue damage model of
high-temperature alloys and optimizing their properties is of great significance.

Numerical simulation of heat treatment is one of the important methods for
studying the thermal fatigue damage model of high-temperature alloys. Numerical
simulation of heat treatment can simulate the thermal loading process of materials

at high temperatures and predict changes in their mechanical properties. The