Effect of Vanadium Content on Properties of New High Strength Steel
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摘要: 为了研究钒含量对Q690-0.5Al-0.5In新型高强钢性能的影响，对添加不同钒含量的Q690-0.5Al-0.5In钢进行制备，并对试样进行了冲击性能和拉伸性能的测试与分析。结果表明：随钒含量的增加，试样的冲击吸收功、强度表现为先增大后缓慢减小，断后伸长率先减小再缓慢增大。与钒含量0.05%相比，钒含量0.2%使试样的冲击吸收功增大了23.27%，抗拉强度和屈服强度分别增大了42 MPa和25 MPa。从提高Q690-0.5Al-0.5In新型高强钢的性能出发，钒含量的最佳添加量为0.2%。Abstract: In order to study the effect of vanadium content on the properties of Q690-0.5 Al-0.5 In high strength steel,the base chemistry Q690-0.5 Al-0.5 In steel with different vanadium contents had been prepared,and the impact and tensile properties of the samples were measured and analyzed.The results show that with the increase of vanadium content,the impact absorbing energy and strength of the sample increase firstly and then decrease slowly,but the elongation decreases firstly and then increases slowly.Compared with 0.05%V steel,the impact absorption energy of 0.2%V steel increases by 23.27%,the tensile strength and yield strength increase by 42 MPa and 25 MPa,respectively.In order to improve the properties of Q690-0.5 Al-0.5 In new high strength steel,the optimum addition of vanadium is 0.2%.
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Key words:
- new high strength steel /
- vanadium content /
- impact property /
- tensile property
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