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高温材料处理:国际期刊

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ISSN 打印: 1093-3611

ISSN 在线: 1940-4360

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EFFECT OF WELDING HEAT INPUT ON HEAT-AFFECTED ZONE SOFTENING IN QUENCHED AND TEMPERED ARMOR STEELS

卷 23, 册 3, 2019, pp. 239-253
DOI: 10.1615/HighTempMatProc.2019031690
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摘要

The paper presents the results of a bead-on-plate test for comparison of microhardness and micro-structure of the heat-affected zone of Miilux Protection 500 (MP 500), Swebor Armor 500 (SA 500), and ATI 500+ quenched and tempered protection steels and alloy armor steel (AAS). Gas metal arc welding (GMAW) with heat-input values varied from 0.50 kJ·mm-1 to 0.90 kJ·mm-1. The microhardness profiles in the heat-affected zones of the investigated materials have shown that the most significant loss of strength was detected in the ATI 500+ steel. Even when bead was deposited with the lowest welding heat input (0.5 kJ·mm-1), the length of the softened heat-affected zone region of the ATI 500+ steel is 1.6−2.0 times larger than that of other materials. Alloy armor steel was found to be less sensitive to welding heating and most resistant to heat-affected zone softening in comparison with other protection steels. The results obtained are explained by studies of microstructure of softened heat-affected zone regions and by comparison of the chemical composition of steels. A significantly higher content of Si, Cr, Ni, and Mo as well as additional alloying with V in the steel has led to suppression of the processes of softening of heat-affected zone regions which are heated to the temperature values of high tempering and partial austenization. The results obtained show the need of improving the GMAW technologies used in production of hulls and towers of armored fighting vehicles.

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对本文的引用
  1. Katok O. A., Kravchuk R. V., Kharchenko V. V., Rudnits’kyi M. P., Bisyk S. P., Davydovs’kyi L. S., Slyvins’kyi O. A., Strength Assessment of Welded Joints of High-Strength Alloy Steels by Indentation Method, Strength of Materials, 52, 5, 2020. Crossref

  2. Prokhorenko Odarka, Hainutdinov Serhii, Prokhorenko Volodymyr, Pulka Cheslav, Numerical simulation of the phase proportion distribution in a butt welded joint of steel DC04 for different back-step welding technological schemes, Procedia Structural Integrity, 36, 2022. Crossref

  3. Prokhorenko Odarka, Hainutdinov Serhii, Prokhorenko Volodymyr, Pulka Cheslav, Senchyshyn Viktor, Numerical simulation of the kinetics of temperature and phase composition in a butt joint made from steel DC04 during a single-pass submerged arc welding, Procedia Structural Integrity, 36, 2022. Crossref

  4. Skowrońska Beata, Szulc Jacek, Bober Mariusz, Baranowski Michał, Chmielewski Tomasz, Selected properties of RAMOR 500 steel welded joints by hybrid PTA-MAG, Journal of Advanced Joining Processes, 5, 2022. Crossref

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