Registration Number
0224U001967,
(0121U108717)
, R & D reports
Title
Die steels for hot deformation of non-ferrous metals and alloys with high performance properties
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Штампові сталі для гарячого деформування кольорових металів та сплавів з підвищеними експлуатаційними властивостями
Head
Hohaiev Kazbek O., Доктор технічних наук
Registration Date
03-02-2024
Organization
Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine
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To develop modes of heat treatment of stamped steel 4Х4Н5М4Ф2 for increase of mechanical properties
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The economic efficiency of the hot pressing of non-ferrous metal blanks and their alloys is determined by the stability of the working tool. Depending on the brand of deformed alloy, the heating temperature of the surface layers can vary from fairly moderate (400-600 °C) to high (600-950 °C) temperatures. At operating temperatures up to 600 °C, satisfactory stability of the tool is ensured in many cases when using traditional stamping steels based on α-hard solution with carbide strengthening. At a temperature of more than 600 °C during operation, the tool fails due to the low heat-resistant steel of the ferrite class. Typical representatives of these steels are steels 3Х2В8Ф, 3Х3М3Ф, 4Х4ВМФС, 5Х3В3МФ and others. The additional introduction of an alloying element (nickel) into the steel on a ferritic basis causes a decrease in the critical point A3. When expanding the region of γ-Fe modification in the steel in its initial state and when it is heated to the temperatures at which the α → γ transformation occurs, the austenite structure is preserved throughout the entire period of high-temperature operation of the stamping tool up to 950 °C. Such steels were named - steels with regulation of austenitic transformation during operation (RAPE). In the traditional approach to increasing the heat resistance of stamp steels on a ferrite basis, the temperatures of phase transformations are increased. This is the main difference between the approach to alloyed heat-resistant stamping steels on a ferritic basis and steels from RAPE.
In the work, the phase composition, crystal structure and determination of mechanical properties of RAPE steel 4Kh3N5M3F and 4Kh4N5M4F2 in the cast and forged states during the development of heat treatment modes were investigated.
Product Description
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Kyryliuk Yevheniia S.
Kyryliuk Stepan F.
Hohaiev Kazbek O.
Sydorchuk Oleh M.
Oleksandr K. Radchenko
Voropaiev Vitalii S.
Askepov Mukafat G.
Hazarehko Volodymyr A.
Vasylieva Halyna I.
Voloshchenko Serhii M.
Barabash Viacheslav A.
Popkov Volodymyr S.
Lukianchuk Vasyl V.
Lukashnko Volodymyr O.
Kalnyk Olha V.
Sifakov Oleksandr M.
Hulyi Volodymyr M.
Chornoshtan Halyna T.
Bobrovytskyi Oleksandr I.
Tkachenko Olha S.
Tkachenko Valentyna A.
Kondratenko Viktoriia S.
Sirenko Ipyna G.
Orel Hanna G.
Pylypenko Natalia M.
Domin Mykola A.
Petro S. Kosarev
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2024-02-03
