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Effects of high-temperature hardness and oxidation on sticking phenomena occurring during hot rolling of two 430J1L ferritic stainless steels SCIE SCOPUS

Title
Effects of high-temperature hardness and oxidation on sticking phenomena occurring during hot rolling of two 430J1L ferritic stainless steels
Authors
Ha, DJSon, CYPark, JWLee, JSLee, YDLee, S
Date Issued
2008-09-25
Publisher
ELSEVIER SCIENCE SA
Abstract
Effects of high-temperature hardness and oxidation on sticking phenomena occurring during hot rolling of two STS 430J1L ferritic stainless steels were investigated in this study. Hot-rolling simulation test was conducted using a high-temperature wear tester. The sticking started from the initial nucleation stage in which the rolled materials were stuck onto the roll specimen surface, proceeded to the growth stage in which stuck fragments grew further, and reached the saturation stage. The modified 430J1L steel had a smaller number of sticking nucleation sites and slower growth rate than the conventional 430J1L steel because of higher high-temperature hardness, thereby leading to less serious sticking. When the simulation test was conducted at 1070 degrees C, Cr oxides were formed on the surface of the rolled materials, and thus the sticking was drastically reduced because of the increased Surface hardness of the rolled materials. In order to prevent or minimize the sticking, thus, it was Suggested to improve high-temperature properties of stainless steels in the case of hot rolling at 900-1000 degrees C, and to promote the formation of oxides in the case of hot rolling at temperatures higher than 1000 degrees C. (C) 2008 Elsevier B.V. All rights reserved.
Keywords
ferritic stainless steel; sticking; high speed steel roll; hot rolling; RETAINED AUSTENITE STABILITY; HIGH-SPEED STEEL; BEHAVIOR; MICROSTRUCTURE; PREDICTION
URI
https://oasis.postech.ac.kr/handle/2014.oak/22546
DOI
10.1016/j.msea.2008.02.042
ISSN
0921-5093
Article Type
Article
Citation
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 492, no. 1-2, page. 49 - 59, 2008-09-25
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이성학LEE, SUNG HAK
Dept of Materials Science & Enginrg
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