Article(id=1188430998711714465, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188430994622268045, articleNumber=1009-5438(2024)04-0079-06, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1717171200000, receivedDateStr=2024-06-01, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761273630072, onlineDateStr=2025-10-24, pubDate=1724515200000, pubDateStr=2024-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761273630072, onlineIssueDateStr=2025-10-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761273630072, creator=13701087609, updateTime=1761273630072, updator=13701087609, issue=Issue{id=1188430994622268045, tenantId=1146029695717560320, journalId=1185652524569653253, year='2024', volume='50', issue='4', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761273629097, creator=13701087609, updateTime=1761283356674, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1188471795062555053, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188430994622268045, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1188471795062555054, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188430994622268045, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=79, endPage=84, ext={EN=ArticleExt(id=1188430998959178403, articleId=1188430998711714465, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Effects of Coiling Temperature on Microstructure and Texture of 50W470 Non-oriented Silicon Steel, columnId=null, journalTitle=Science & Technology of Baotou Steel, columnName=null, runingTitle=null, highlight=null, articleAbstract=

The effect laws of coiling temperature on microstructure and texture of 50W470 non-oriented silicon steel under hot rolling and normalizing processes are studied with such detection and analysis technologies as the optical microscope (OM) and electron back-scattered diffraction (EBSD). The results showed that high temperature coiling could promote the transformation of deformed microstructure in central layer of hot rolled plate to equiaxed grain without distortion. The promoting effect of coiling at 740 ℃ is better than that of coiling at 600 ℃. After high temperature coiling, the proportion of favorable texture {100}+{110} is increased, while the proportion of unfavorable texture{111} is decreased. After normalizing, the microstructure of high temperature coiling plate is with perfect recrystallization and the deformed microstructure is disappeared as well as the coiling plate with temperature of 740 ℃ is with more favorable texture {100}+{110} and fewer unfavorable texture{111} than those of coiling plate with temperature of 600 ℃.

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吴忠旺(1979-),男,安徽省池州市人,研究员,现从事硅钢生产技术开发工作。

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吴忠旺(1979-),男,安徽省池州市人,研究员,现从事硅钢生产技术开发工作。

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吴忠旺(1979-),男,安徽省池州市人,研究员,现从事硅钢生产技术开发工作。

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C Si Mn P S Als Ti O N Fe
0.001 6 1.75 0.353 0.028 0.002 6 0.55 ≤0.003 ≤0.003 ≤0.003 余量
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试验钢化学成分(质量分数) %

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C Si Mn P S Als Ti O N Fe
0.001 6 1.75 0.353 0.028 0.002 6 0.55 ≤0.003 ≤0.003 ≤0.003 余量
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卷取温度/℃ 各织构占比/%
{100} {110} {111}
空冷 8.33 43.47 29.77
600 12.70 39.24 28.48
740 14.27 38.36 27.38
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不同卷取温度热轧板的晶粒取向统计表

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卷取温度/℃ 各织构占比/%
{100} {110} {111}
空冷 8.33 43.47 29.77
600 12.70 39.24 28.48
740 14.27 38.36 27.38
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卷取温度/℃ 各织构占比/%
{100} {110} {111}
600 16.38 31.78 24.35
740 23.08 28.68 19.05
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常化板的晶粒取向统计表

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卷取温度/℃ 各织构占比/%
{100} {110} {111}
600 16.38 31.78 24.35
740 23.08 28.68 19.05
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卷取温度对50W470无取向硅钢组织和织构的影响
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吴忠旺 1, 2 , 何宇峥 1 , 张慧敏 1, 2 , 董瑞 1, 2 , 孙婷婷 1, 2 , 刘朋成 3 , 金自力 1, 2 , 任慧平 1, 2
包钢科技 | 2024,50(4): 79-84
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包钢科技 | 2024, 50(4): 79-84
卷取温度对50W470无取向硅钢组织和织构的影响
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吴忠旺1, 2, 何宇峥1, 张慧敏1, 2, 董瑞1, 2, 孙婷婷1, 2, 刘朋成3, 金自力1, 2, 任慧平1, 2
作者信息
  • 1.内蒙古科技大学材料科学与工程学院, 内蒙古 包头 014010
  • 2.内蒙古自治区新金属材料重点实验室, 内蒙古 包头 014010
  • 3.内蒙古包钢钢联股份有限公司技术中心, 内蒙古 包头 014010
  • 吴忠旺(1979-),男,安徽省池州市人,研究员,现从事硅钢生产技术开发工作。

Effects of Coiling Temperature on Microstructure and Texture of 50W470 Non-oriented Silicon Steel
Zhong-wang Wu1, 2, Yu-zheng He1, Hui-min Zhang1, 2, Rui Dong1, 2, Ting-ting Sun1, 2, Peng-cheng Liu3, Zi-li Jin1, 2, Hui-ping Ren1, 2
Affiliations
  • 1. School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2. Inner Mongolia Key Laboratory of New Metal Material, Baotou 014010, Inner Mongolia Autonomous Region, China
  • 3. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
出版时间: 2024-08-25
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利用光学显微镜(OM)、电子背散射衍射(Electron Back-Scattered Diffraction, EBSD)检测分析技术研究了卷取温度对50W470无取向硅钢热轧、常化工艺下的组织和织构的影响规律。结果表明,高温卷取会促进热轧板中心层变形组织向无畸变等轴晶粒的转变,经过740 ℃卷取的促进效果要好于600 ℃卷取,热轧板经过高温卷取后有利织构{100}+{110}占比升高,不利织构{111}占比减少。高温卷取板经过常化后组织发生完全再结晶,变形组织消失,常化后的740 ℃卷取板较600 ℃卷取板有利织构{100}+{110}占比更多,不利织构{111}减少。
卷取温度  /  无取向硅钢  /  组织  /  织构

The effect laws of coiling temperature on microstructure and texture of 50W470 non-oriented silicon steel under hot rolling and normalizing processes are studied with such detection and analysis technologies as the optical microscope (OM) and electron back-scattered diffraction (EBSD). The results showed that high temperature coiling could promote the transformation of deformed microstructure in central layer of hot rolled plate to equiaxed grain without distortion. The promoting effect of coiling at 740 ℃ is better than that of coiling at 600 ℃. After high temperature coiling, the proportion of favorable texture {100}+{110} is increased, while the proportion of unfavorable texture{111} is decreased. After normalizing, the microstructure of high temperature coiling plate is with perfect recrystallization and the deformed microstructure is disappeared as well as the coiling plate with temperature of 740 ℃ is with more favorable texture {100}+{110} and fewer unfavorable texture{111} than those of coiling plate with temperature of 600 ℃.

coiling temperature  /  non-oriented silicon steel  /  microstructure  /  texture
吴忠旺, 何宇峥, 张慧敏, 董瑞, 孙婷婷, 刘朋成, 金自力, 任慧平. 卷取温度对50W470无取向硅钢组织和织构的影响. 包钢科技, 2024 , 50 (4) : 79 -84 .
Zhong-wang Wu, Yu-zheng He, Hui-min Zhang, Rui Dong, Ting-ting Sun, Peng-cheng Liu, Zi-li Jin, Hui-ping Ren. Effects of Coiling Temperature on Microstructure and Texture of 50W470 Non-oriented Silicon Steel[J]. Science & Technology of Baotou Steel, 2024 , 50 (4) : 79 -84 .
无取向硅钢主要用于制作电机转子和定子的铁芯材料,其晶粒大小、合金元素含量、夹杂物数量和分布、织构分布等因素都对磁性能有显著的影响[1-2]。无取向硅钢理想织构组分为{100},在{100}上有两个易磁化轴,磁性最好;其次是{110},在{110}上有一个易磁化轴;而不利织构为{111},{111}无易磁化轴,为难磁化方向。因此,织构的分布及各组分强度对冷轧无取向硅钢的磁性能有显著影响[3-4]
无取向硅钢生产过程中提高卷取温度可以明显改善热轧组织,使热轧板发生再结晶,减少热轧板中变形组织,同时可以预防瓦楞状缺陷,改善钢板的性能[5-9]。本文重点研究了卷取温度对50W470无取向硅钢的组织和织构的影响。
采用25 kg真空感应炉冶炼,浇注成尺寸为220 mm×150 mm×150 mm(长×宽×高)的铸锭,试验钢化学成分如表1所示。将铸锭进行均匀化退火和锻造,去除在浇注过程中产生的缺陷,最终锻坯尺寸为825 mm×100 mm×60 mm(长×宽×高)。锻坯经过6道次热轧轧至2.3 mm厚,将热轧板分别放入600 ℃和740 ℃箱式炉中保温2 h后断电,随炉冷却进行模拟卷取。将热轧板进行连续常化处理,常化温度为930 ℃。
选用VERT A1型蔡司光学显微镜对金相组织进行观察;选用Nano Measurer软件测量试验钢金相组织各区的厚度以及晶粒尺寸大小;选用Zeiss Supre55热场发射扫描电子显微镜进行电子背散射衍射(Electron Back-Scattered Diffraction, EBSD)织构标定分析。
图1为不同卷取温度热轧板的显微组织。可以看出,空冷热轧板沿厚度方向的显微组织不均匀,表层为细小的等轴晶粒,平均晶粒尺寸为28.39 μm,厚度为321.28 μm;过渡层为等轴晶粒与长条组织的混合区域,厚度为382.02 μm;中心层为长条组织区域,厚度为569.73 μm。造成组织分布不均匀的原因与热轧过程中的受力状态与变形程度有关[10],表面同较冷的轧辊接触,使晶体组织缺陷累积到临界浓度以上,促发再结晶过程得到等轴晶。同时受剪切应力和压应力作用,变形量大,表层缺陷密度大、储能高,有利于发生再结晶;心部不与轧辊接触,受力状态简单,主要为压应力,变形量小,累计能量小,相对不容易发生再结晶。
600 ℃卷取热轧板表层细晶区域平均晶粒尺寸为31.25 μm,厚度为477.24 μm,过渡层区域厚度为421.76 μm,中心层区域厚度为278.08 μm。相比空冷热轧板表层区域厚度增加,过渡层区域厚度增加,中心层区域厚度减小,表层平均晶粒尺寸增大。
740 ℃卷取热轧板表层平均晶粒尺寸为39.54 μm,表层区域厚度为479.82 μm,过渡层区域厚度为435.48 μm,中心层区域厚度为286.24 μm。经过740 ℃卷取后,表层区域厚度最大,中心层区域厚度最小;表层平均晶粒尺寸最大。说明卷取温度越高,晶粒发生再结晶的能力越强。
图2为600 ℃和740 ℃卷取板常化后显微组织。可以看出,600 ℃和740 ℃卷取板经过常化后显微组织均发生了完全再结晶,中心层变形组织完全消失,600 ℃卷取板常化后平均晶粒尺寸为130.73 μm,740 ℃卷取板常化后平均晶粒尺寸为120.76 μm。常化过程是以热轧板晶粒内部形变储能为驱动力,促使晶粒发生再结晶形核,通过大角度晶界迁移并促进再结晶晶粒长大[11],主要表现为热轧态组织的静态再结晶和晶粒长大。
图3为不同卷取温度热轧板的晶粒取向IPF图,表2为晶粒取向统计表。50W470的有利织构为{100}与{110}织构,不利织构为{111}织构。由图3表2可以看出,热轧空冷板{100}织构占比为8.33%,{110}织构占比为43.47%,{111}织构占比为29.77%;经过600 ℃卷取后{100}织构占比为12.70%,{110}织构占比为39.24%,{111}织构占比为28.48%;经过740 ℃卷取后{100}织构占比为14.27%,{110}织构占比为38.36%,{111}织构占比为27.38%。在硅钢铸坯中存在大量{100}柱状晶且具有遗传性[7],热轧后{100}柱状晶会形成立方取向和旋转立方取向[12]。可以看到随着卷取温度的升高,50W470无取向硅钢有利{100}+{110}织构占比升高,{111}不利织构占比降低。
图4为不同卷取温度热轧板的晶粒取向分布图。热轧空冷板表层主要存在织构为α线织构{112}<110>和{411}<148>织构,过渡层主要为高斯织构{110}<001>和黄铜型织构{110}<112>,中心层主要以黄铜型织构{110}<112>和γ线织构{111}<110>。600 ℃卷取板表层织构占比并没有发生很大变化,过渡层主要存在γ线织构{111}<110>和{411}<148>织构,中心层主要为γ线织构{111}<110>。740 ℃卷取板表层开始出现{411}<148>织构,过渡层出现黄铜型织构{110}<112>,中心层出现大量γ线织构{111}<110>。{411}<148>织构既可能来源于铸坯中的{100}柱状晶,也可能来自大压下量下纯α线形变晶粒内的一些特殊取向[13]
图5为600 ℃和740 ℃卷取常化板的IPF图(由表层到中心层),表3为晶粒取向统计表。对于无取向硅钢来说,{100}晶轴易磁化,{110}晶轴次之,{111}织构难磁化[14]。因此,{100}和{110}面织构为有利织构,{111}和{112}面织构为不利织构。在热处理过程中,可以适当增大{100}和{110}面织构的强度、减小{111}面织构的强度来提高成品板材的磁性能。600 ℃卷取常化板中{100}织构占比为16.38%,{110}织构占比为31.78%,{111}织构占比为24.35%;740 ℃卷取常化板中{100}织构占比为23.08%,{110}织构占比为28.68%,{111}织构占比为19.05%。可以看到740 ℃卷取板经常化后{100}+{110}织构占比更多。
图6为常化板晶粒取向分布图(由表层到中心层)。可以看出,600 ℃卷取常化板表层主要存在织构为γ线织构{111}<112>,过渡层以反高斯织构{110}<110>为主,中心层以立方织构{100}<100>为主。740 ℃卷取常化板表层主要存在织构为{411}<148>织构,过渡层以{411}<148>织构和γ线织构{111}<112>为主,中心层以立方织构{100}<100>为主。
(1)50W470无取向硅钢热轧板经过600 ℃和740 ℃卷取后,有利织构{100}+{110}占比升高,不利织构{111}占比降低,高温卷取有利于生成有利织构,降低不利织构。
(2)50W470无取向硅钢卷取板经过常化后,随着卷取温度的升高,{100}+{110}有利织构占比升高,{111}不利织构占比降低,并且经过740 ℃卷取后效果更明显。
(3)740 ℃卷取常化板相较于600 ℃卷取常化板黄铜型织构{110}<112>和反高斯织构{110}<110>明显升高,其他织构占比基本不变。
  • 内蒙古自治区直属高校基本科研业务费项目(2023QNJS022)
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2024年第50卷第4期
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  • 接收时间:2024-06-01
  • 首发时间:2025-10-24
  • 出版时间:2024-08-25
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  • 收稿日期:2024-06-01
基金
内蒙古自治区直属高校基本科研业务费项目(2023QNJS022)
内蒙古自治区直属高校基本科研业务费项目(2023QNJS024)
作者信息
    1.内蒙古科技大学材料科学与工程学院, 内蒙古 包头 014010
    2.内蒙古自治区新金属材料重点实验室, 内蒙古 包头 014010
    3.内蒙古包钢钢联股份有限公司技术中心, 内蒙古 包头 014010
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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