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EFFECTS OF ALLOYING ELEMENTS ON STICKING OCCURRING DURING HOT ROLLING OF FERRITIC STAINLESS STEELS SCIE SCOPUS KCI

Title
EFFECTS OF ALLOYING ELEMENTS ON STICKING OCCURRING DURING HOT ROLLING OF FERRITIC STAINLESS STEELS
Authors
Ha, DJKim, YJLee, JSLee, YDLee, S
Date Issued
2008-09
Publisher
KOREAN INST METALS MATERIALS
Abstract
In this study, effects of alloying elements on the sticking occurring during hot rolling of five kinds of ferritic STS430J1L stainless steels were investigated by analyzing high-temperature hardness and oxidation behavior of the rolled steels. Hot-rolling simulation tests were conducted by a high-temperature wear tester which could simulate actual hot rolling. The simulation test results revealed that the sticking process proceeded with three stages, i.e., nucleation, growth, and saturation. Since the hardness continuously decreased as the test temperature increased, whereas the formation of Fe-Cr oxides in the rolled steel surface region increased, the sticking of five stainless steels was evaluated by considering both the high-temperature hardness and oxidation effects. The addition of Zr, Cu, or Si had a beneficial effect on the sticking resistance, while the Ni addition did not show any difference in the sticking. Particularly in the case of the Si addition, Si oxides formed first in the initial stage of high-temperature oxidation, worked as initiation sites for Fe-Cr oxides, accelerated the fort-nation of Fe-Cr oxides, and thus raised the sticking resistance by about 10 times in comparison with the steel without Si content.
Keywords
ferritic stainless steel; sticking; high speed steel roll; hot rolling
URI
https://oasis.postech.ac.kr/handle/2014.oak/28624
ISSN
1738-8228
Article Type
Article
Citation
JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS, vol. 46, no. 9, page. 593 - 603, 2008-09
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이성학LEE, SUNG HAK
Dept of Materials Science & Enginrg
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