热处理对高强度捆带钢的组织和性能的影响
Effect of Heat Treatment on Microstructure and Mechanical Properties of High Strength Strapping Steel
崔天成, 郑 磊
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作者单位：宝山钢铁股份有限公司 研究院, 上海 201900
中文关键字：捆带钢； 淬火； 回火； 微观组织； 力学性能
英文关键字：strapping steel; quenching; tempering; microstructure; mechanical properties
中文摘要：实验室研究了一种高强捆带钢的热处理工艺、组织和性能的关系。结果表明：含0.31%C-0.23% Si-1.43%Mn的冷轧板，经735～745 ℃的两相区迅速淬火+470 ℃中温回火后可达到1100 MPa以上的抗拉强度和10%以上的伸长率，用此工艺生产的捆带钢比传统的铅浴等温淬火工艺具有更高的强度。
英文摘要：The relationships between heat treatment processing, microstructure and mechanical properties of high strength steel strapping were investigated. The results show that the high tensile strength (σb≥1100 MPa) and good ductility (δ≥10%) of the steel which containing 0.31%C-0.23%Si-1.43%Mn can be obtained by quenching at 735～745 ℃ and followed by tempering at 470 ℃. The strength of strapping steel manufactured by this process is higher than that manufactured by traditional austempering process.