【摘要】 在原有X80管线钢微观结构的基础上,通过不同的热处理工艺引入等轴状铁素体作为塑性相来提高管线钢的塑性变形能力,分析等轴状铁素体含量对管线钢强度、塑性和冲击韧性的影响。结果表明,随着等轴状铁素体含量的增加,管线钢的抗拉强度、屈服强度和冲击韧性逐渐下降,但均匀伸长率增加。更多还原

【Abstract】 Based on microstucture of original X80 pipeline steel,through different heat treatment processes,the equiaxial ferrite was employed as plastic phase to improve the plastic deformation ability.Effects of equiaxial ferrite content on strength,plastic and toughness of pipeline steel were analyzed.Results show that with the increase of equiaxial ferrite content,the tensile strength,yield strength and toughness of pipeline are decreased,while the uniform elongation is increased.更多还原