Study of the Coefficient of Thermal Expansion for Steel Q235

Abstract:

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The dynamic coefficient of thermal expansion for steel Q235 during cooling was investigated using experimental measurements and model calculations. The coefficient of thermal expansion under 1400°С was measured with a thermal dilatometer. The coefficient was derived from a segregation model of two-phase zone for of temperature range of 1400°С to zero-strength temperature (ZST). The obtained results reveal that the coefficient of thermal expansion shows two jumps in the temperature zone of the peritectic reaction and the eutectoid reaction. The anti-expansion phenomenon caused by the eutectoid reaction in the cooling process corresponds to the low-temperature crack-sensitive area. Therefore, the slab straightening process should be avoided in this temperature range during continuous casting.

Info:

Periodical:

Advanced Materials Research (Volumes 194-196)

Edited by:

Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang

Pages:

326-330

DOI:

10.4028/www.scientific.net/AMR.194-196.326

Citation:

J. X. Fu et al., "Study of the Coefficient of Thermal Expansion for Steel Q235", Advanced Materials Research, Vols. 194-196, pp. 326-330, 2011

Online since:

February 2011

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Price:

$35.00

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