Structure-Property Relationships in a Heat-Treated Weldable Steel

Liu Guoquan; Cui Wenxuan; Jiang Hai; Qin Ruikai; Zhang Wanshan

doi:10.13374/j.issn1001-053x.1993.01.013

Volume 15 Issue 1

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Liu Guoquan, Cui Wenxuan, Jiang Hai, Qin Ruikai, Zhang Wanshan. Structure-Property Relationships in a Heat-Treated Weldable Steel[J]. Chinese Journal of Engineering, 1993, 15(1): 73-81. doi: 10.13374/j.issn1001-053x.1993.01.013

Citation:

Liu Guoquan, Cui Wenxuan, Jiang Hai, Qin Ruikai, Zhang Wanshan. Structure-Property Relationships in a Heat-Treated Weldable Steel[J]. Chinese Journal of Engineering, 1993, 15(1): 73-81. doi: 10.13374/j.issn1001-053x.1993.01.013

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Structure-Property Relationships in a Heat-Treated Weldable Steel

doi: 10.13374/j.issn1001-053x.1993.01.013

1. University of Science and Technology Beijing;
2. Anshan Iron and Steel Complany

Received Date: 1992-06-17
Available Online: 2021-10-18

Abstract

Abstract

A785MPa-grade weldable HSLA steel (HQ80C) with Cr, Ni, Mo, V, Ti, and B has been experimentally studied to determine quantitative relationships between properties (strength and toughness) and microstructures. It has been found that the ductile-brittle transition temperature (50%FATT) varies linearly with the mean intercept of martensitic packets. An empiric equation has been established to predict the yield strength of the as quenched and tempered steel; the relative deviation of the predicted yield strength values from the experimental ones are all less than 3% when the steel was tempred at 500 to 700℃.
- HSLA steel,
- structure-property relationships,
- heat treatment,
- strength,
- toughness,
- martensite packets