| 热处理对AH36船板钢微观组织和力学性能的影响 |
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| 引用本文： | 孔冠宏,张瑞堂,冯锐,刘玉爱.热处理对AH36船板钢微观组织和力学性能的影响[J].热处理,2013(6):30-34. |
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| 作者姓名： | 孔冠宏 张瑞堂 冯锐 刘玉爱 |
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| 作者单位： | [1]济钢集团科技质量部,山东济南250101 [2]山东大学材料科学与工程学院,山东济南250061 [3]山东省大规格合金结构钢棒材工程技术中心,山东济南250061 |
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| 摘 要： | 研究了正火对AH36船板钢微观组织和力学性能的影响。结果表明，AH36船板钢随正火温度的升高，屈服强度和抗拉强度降低，断后伸长率和冲击韧度先升后降，力学性能的变化与位错密度和晶粒尺寸密切相关。AH36船板钢的最佳正火温度为900℃，经900℃正火后，钢板晶粒细小均匀，异常偏析带完全被珠光体替代，断口分层现象消失，塑韧性显著改善。
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| 关 键 词： | 正火 船板钢 分层 异常偏析带 |
Effect of Heat Treatment on Microstructure and Mechanical Properties of AH36 Shipbuilding Plate |
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| Affiliation: | KONG Guanhong, ZHANG Ruitang , FENG Rui , LIU Yu＇ ai(1. Science and Technology Quality Department, Jinan Iron and Steel Group, Jinan 250101, Shandong China; 2. School of Materials Science and Engineering, Shandong University, Jinan 250061, Shandong China; 3. Engineering Research Center of Large Size Alloy Structural Steel Bars of Shandong Province, Jinan 250061, Shandong China) |
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| Abstract: | The effect of normalizing on microstructure and mechanical properties of AH36 shipbuilding plate was investigated. The results show that the yield strength and tensile strength decrease, and both the elongation and impact toughness first increase and then decrease as the normalizing temperature increases for the AH36 shipbuilding plate, which is closely related to the dislocation density and the grain size. The most suitable normalizing temperature of AH36 shipbuilding plate is 900 ℃ at which normalizing will allow the plate to offer fine and uniform grain, pearlite replacing abnormal segregation band, lamination-free fracture and obviously improved toughness. |
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| Keywords: | normalizing shipbuilding plate lamination abnormal segregation band |
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