| 退火温度对T4镀锡板组织性能的影响 |
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| 引用本文： | 王彬,魏宝民. 退火温度对T4镀锡板组织性能的影响[J]. 金属热处理, 2022, 47(6): 115-118. DOI: 10.13251/j.issn.0254-6051.2022.06.022 |
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| 作者姓名： | 王彬 魏宝民 |
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| 作者单位： | 上海梅山钢铁股份有限公司,江苏 南京 210039;宝钢股份研究院 梅钢技术中心,江苏 南京 210039 |
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| 摘 要： | 以0.19 mm规格T4冷轧镀锡板为研究对象,利用Gleeble-3500热模拟机进行退火及过时效退火模拟试验,分析了T4镀锡板退火温度对组织性能影响。结果表明,试验钢板再结晶开始温度约为575 ℃,再结晶结束温度为640~670 ℃。过时效退火温度为560 ℃时,试验钢处于再结晶初始阶段。过时效退火温度高于575 ℃,随着退火温度升高,再结晶程度越为充分。过时效退火温度达到640 ℃后,再结晶形核已经完成,逐渐形成无畸变新晶粒。此外,T4镀锡板经时效退火处理后,其硬度随过时效退火温度升高呈下降趋势,在540~640 ℃过时效退火因发生再结晶导致硬度降幅显著(49 HV),640~670 ℃过时效退火则硬度降幅较小(9 HV)。
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| 关 键 词： | T4镀锡板 过时效退火 再结晶温度 微观组织 硬度 |
| 收稿时间： | 2022-01-21 |
Effect of annealing temperature on microstructure and properties of T4 tinplate |
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| Wang Bin,Wei Baomin. Effect of annealing temperature on microstructure and properties of T4 tinplate[J]. Heat Treatment of Metals, 2022, 47(6): 115-118. DOI: 10.13251/j.issn.0254-6051.2022.06.022 |
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| Authors: | Wang Bin Wei Baomin |
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| Affiliation: | 1. Shanghai Meishan Iron & Steel Co., Ltd., Nanjing Jiangsu 210039, China; 2. Meishan Technology Center, Baosteel Research Institute, Nanjing Jiangsu 210039, China |
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| Abstract: | Taking 0.19 mm T4 cold-rolled tinplate as the research object, annealing and over-aging annealing simulation tests were carried out by using a Gleeble-3500 thermal simulator, and the effect of annealing temperature on microstructure and properties of the T4 tinplate was analyzed. The results show that the recrystallization start temperature of the tested tinplate is about 575 ℃, and the recrystallization end temperature is 640-670 ℃. When the over-aging annealing temperature is 560 ℃, the tested steel is in the initial stage of recrystallization. When the over-aging annealing temperature is higher than 575 ℃, the recrystallization degree becomes more sufficient with the increase of annealing temperature. The recrystallization nucleation is accomplished when the over-aging annealing temperature reaches 640 ℃, and the distortion-free new grains are gradually formed. Besides that, the hardness of the annealed T4 tinplate decreases with the increasing of over-aging annealing temperature, the hardness decreases significantly (by 49 HV) from 540 ℃ to 640 ℃ due to recrystallization but only by 9 HV from 640 ℃ to 670 ℃. |
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| Keywords: | T4 tinplate over-aging annealing recrystallizing temperature microstructure hardness |
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