摘要
在实验室试验研究的基础上,依托工业连续热镀锌(CGL)生产线成功开发了合金化镀锌双相钢DP980-GA产品。产品基体的微观组织由铁素体、马氏体及很少量的贝氏体组成;镀层相结构由靠近基体的厚度0.6μm薄层Γ相、主体δ相和表层少量ζ相构成,镀层Fe含量适中,控制在10.5%左右。产品的力学性能表现出较低的屈强比(0.624)、良好的伸长率以及较好的扩孔率。量产产品已批量应用于A柱内板等零件,其屈服强度、抗拉强度、伸长率等指标具备良好的过程能力。
On the basis of laboratory test and research,galvannealed dual⁃phase steel DP980⁃GA was successfully developed relying on industrial continuous galvanizing line(CGL).The results show that microstructure of the steel substrate is composed of ferrite,martensite and a small amount of bainite.The phase structure of the coating is composed of thinΓlayer with 0.6μm thickness near the substrate,principal phaseδand a small amount ofζphase,where the Fe content in the coating is around 10.5%.The mechanical properties of the DP980⁃GA steel product show low yield ratio(0.624),good elongation and hole expansion ratio.The industrial mass produced products were applied to parts such as A pillar inner,of which the process capacity of yield strength,tensile strength and elongation is controlled stably.
作者
张亮
黄学启
刘李斌
李振
谢春乾
史昌
刘兴全
Zhang Liang;Huang Xueqi;Liu Libin;Li Zhen;Xie Chunqian;Shi Chang;Liu Xingquan(Beijing Shougang Co.,Ltd.,Beijing 100041,China;Shougang Research Institute of Technology,Beijing 100043,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第4期34-37,共4页
Heat Treatment of Metals
