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在实验室条件下模拟罩式退火,运用金相显微镜、扫描电镜、微型控制电子万能实验机和X射线衍射仪研究了08Al冷轧深冲用钢不同退火温度(610～700℃)对其显微组织、力学性能和再结晶织构的影响。结果表明:在实验退火温度下,冷轧板在690℃的组织和综合力学性能最优,{111}织构组分的百分含量最高,{111}/{001}<110>的比值最大,所以在690℃08Al钢可获得最优的深冲性能。实验用钢在700℃退火组织中出现了大晶粒和对深冲性能有害的半网状和网状渗碳体,因此退火温度应该控制在700℃以下。
Simulated annealing in the laboratory conditions, the use of metallographic microscope, scanning electron microscopy, micro-controlled electronic universal testing machine and X-ray diffraction study of 08Al cold-rolled deep drawing of steel at different annealing temperature (610 ~ 700 ℃) was significantly Effect of micro-organization, mechanical properties and recrystallization texture. The results show that the microstructure and mechanical properties of cold rolled plate are the best at 690 ℃, and the highest content of {111} texture components is {111} / {001} <110> the ratio of the maximum, so the 08Al steel 690 ℃ to obtain the best deep-drawing properties. The experimental steel shows a large grain size and a semi-reticular and reticular cementite that are detrimental to deep drawing properties in an annealed microstructure at 700 ° C. Therefore, the annealing temperature should be controlled below 700 ° C.