RESEARCH ON STRENGTH AND TOUGHNESS OF ULTRA-FINE GRAIN STEEL
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摘要: 研究了工业生产的超细晶粒热轧钢板的强韧性。结果表明:用Q235普碳钢成分生产的超细晶粒热轧钢板的显微组织为铁素体和珠光体, 铁素体晶粒尺寸为3~5μm, 抗拉强度和屈服强度分别达到510MPa和400MPa以上, 超细晶粒热轧钢板不仅具有较高的强度, 而且具有较高的延伸率和韧性。Abstract: The strength and toughness of hot rolled strip with ultra-fine grain produced in industrial process were analyzed.The results show that the microstructure of hot rolled strip with ultra-fine grain is ferrite and pearlite.The ferrite grain size is about 3~5 μm.The tensile strength is over 510 MPa, and the yield strength is over 400 MPa.The hot rolled strip with ultra-fine grain is of high strength, high elongation and superior toughness.
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Key words:
- ultra-fine grain steel /
- microstructure /
- strength /
- toughness
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