High temperature oxidation behavior of high-vanadium wear resistant alloy in different cooling approaches

CHEN Ping-hu; LI Rui-qing; ZENG Song-sheng; LI Xiao-qian

doi:10.13374/j.issn2095-9389.2018.01.011

Volume 40 Issue 1

Jan. 2018

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Article Navigation > Chinese Journal of Engineering > 2018 > 40(1): 84-91

CHEN Ping-hu, LI Rui-qing, ZENG Song-sheng, LI Xiao-qian. High temperature oxidation behavior of high-vanadium wear resistant alloy in different cooling approaches[J]. Chinese Journal of Engineering, 2018, 40(1): 84-91. doi: 10.13374/j.issn2095-9389.2018.01.011

Citation:

CHEN Ping-hu, LI Rui-qing, ZENG Song-sheng, LI Xiao-qian. High temperature oxidation behavior of high-vanadium wear resistant alloy in different cooling approaches[J]. Chinese Journal of Engineering, 2018, 40(1): 84-91. doi: 10.13374/j.issn2095-9389.2018.01.011

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High temperature oxidation behavior of high-vanadium wear resistant alloy in different cooling approaches

doi: 10.13374/j.issn2095-9389.2018.01.011

1) College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
2) State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
3) Light Alloy Research Institute, Central South University, Changsha 410083, China
4) Valin ArcelorMittal Automotive Steel Co., Ltd., Loudi 417000, China

Received Date: 2017-06-07

Abstract

Abstract

The oxidation mass increasing method was adopted to explore the oxidation behavior of high-vanadium wear-resistant alloy at 950℃. The oxidation mechanism and cracks behavior were studied with different cooling types (furnace cooling and air cooling). The results indicated that the weight increment per unit area was obviously large at the beginning of the oxidation due to the matrix being in direct contact with the air. Additionally, the oxidation increase gains of furnace and air cooling were 82.7 mg·cm^-2 and 39.1 mg·cm^-2, respectively, after 8 h of oxidation. At the same time, the preferential formation of Cr₂O₃ was observed with 50-200 nm at the matrix and oxidation layer interface. Remarkable thermal stress was produced in the oxidation layer due to the larger cooling rate. The warped phenomenon appeared at the oxidation layer due to the production of growth stress. However, the shedding phenomenon rarely occurred in the oxide layer.
- high-vanadium wear-resistant alloy,
- high temperature oxidation,
- gain in weight,
- growth stress,
- thermal stress

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References(19)

References

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