Strain aging sensitivity of multi-phase pipeline steelChinese Full Text
WU Sheng-jie;NIE Wen-jin;SHANG Cheng-jia;CHENG Jun-jie;ZHANG Hong-wei;ZHANG Xiao-bing;School of Material Science and Technology,University of Science and Technology Beijing;Institute of Research of Iron and Steel,Jiangsu Sha-Steel Group Co. Ltd.;Chief Engineer Office,Jiangsu Sha-Steel Group Co. Ltd.;
Abstract: Transversal pre-strain experiments were carried out to investigate the effect of transversal hole enlargement on the tensile strain behavior of multi-phase pipeline steel. Experimental results indicate that the work hardening behavior after pre-strain treatment has directional characterization. When the pre-strain direction parallels to the final tensile strain direction,the work hardening rate is very high. Only when the pre-strain rate is lower than 2%,the yield ratio can keep below 0. 95. When the tensile strain direction is perpendicular to the pre-strain direction,the strain-stress curves can maintain a continuous yield character,which has low yield ratio（ below 0. 75） and high uniform elongation rate. In addition,strain aging treatment was carried out to investigate the effect of anticorrosion thermal coating treatment on the tensile strain behavior of multi-phase pipeline steel. It is shown that the multi-phase pipeline steel has excellent anti-aging stability.
- DOI：
10.13374/j.issn1001-053x.2014.01.010
- Series：
- Subject：
- Classification Code：
TG142.1
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