锰含量和终轧温度对低成本中钛Q345B钢组织性能的影响

doi:10.13228/j.boyuan.issn0449-749x.20140146

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Abstract Influences of different manganese content (0.6%-1.0%) and finishing rolling temperature on the microstructure and mechanical properties of low cost middle titanium (0.04%-0.05%) Q345B Steels were studied by laboratory rolling experiments, combining TEM observing the rule of Ti precipitation in the steel. The results indicate that when the manganese content was 0.8% and the finish rolling temperature was 850 ℃, the yield strength of the experimental steel was 491 MPa, the tensile strength was 625 MPa and the elongation was 33.6%. It can reduce the cost to maximum under the condition of meeting mechanical properties. The precipitation of Ti is mainly spherical nanometer size TiC particles, with a small amount of square large TiN particles.

Received: 17 March 2014 Published: 02 November 2014

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中图分类号：TG335.5

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	Articles by authors
	YANG Cai-Shui
	LUO Hu
	LI Jun-Hong
	KANG Yong-Lin

Cite this article:

YANG Cai-Shui,LUO Hu,LI Jun-Hong等. Effects of Manganese Content and Finishing Rolling Temperature on the Microstructure and Mechanical Properties of Low Cost Middle Titanium Q345B Steel[J]. Iron and Steel, 2014, 49(11): 59-63.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20140146 OR http://www.chinamet.cn/Jweb_gt/EN/Y2014/V49/I11/59

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