| 中碳钢丝形变组织演变及其形成机制 |
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| 引用本文： | 王利明,杨恒,吴建峰,孟庆辉,刘礼华.中碳钢丝形变组织演变及其形成机制[J].金属制品,2010,36(5):1-6,10. |
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| 作者姓名： | 王利明 杨恒 吴建峰 孟庆辉 刘礼华 |
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| 作者单位： | 江苏法尔胜泓昇集团有限公司; |
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| 摘 要： | 为研究高强度中碳钢丝的生产工艺并探讨变形组织演变及其形成机制,以45钢直径6.5 mm盘条为原料,计算经不同道次拉拔钢丝的真应变,采用扫描电镜进行金相组织分析及背散射电子衍射(EBSD)取向分析,用定量金相法计算铁素体、珠光体体积分数及其真应变。结果表明,中碳钢丝拉拔过程中,随应变的不断增大,铁素体、珠光体并不是同步变形,先共析铁素体变形大于珠光体,横截面上先共析铁素体所占的比例在不断减小,导致应变不均匀,从而形成拉拔的微缺陷。通过伪共析处理工艺抑制先共析铁素体的析出,可提高中碳钢丝拉拔的强度极限,获得抗拉强度大于2 400 MPa的中碳钢制绳钢丝。
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| 关 键 词： | 高强度中碳钢丝 拉拔变形 真应变 显微组织 伪共析处理 |
Microstructure evolution and formation mechanism of medium carbon steel wire |
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| WANG Li-ming,YANG Heng,WU Jian-feng,MENG Qing-hui,LIU Li-hua.Microstructure evolution and formation mechanism of medium carbon steel wire[J].Steel Wire Products,2010,36(5):1-6,10. |
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| Authors: | WANG Li-ming YANG Heng WU Jian-feng MENG Qing-hui LIU Li-hua |
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| Affiliation: | WANG Li-ming,YANG Heng,WU Jian-feng,MENG Qing-hui,LIU Li-hua(Jiangsu Fasten Hopesun Group Co.,Ltd.,Jiangyin 214433,China) |
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| Abstract: | In order to research production technology of high strength medium carbon steel wire and probe the deformation microstructure evolution and its formation mechanism,taking 45 steel wire rod with diameter 6.5mm as material,the true strains of steel wire undergoing different pass drawn are calculated,adopting SEM to analyze microstructure and adopting EBSD to analyze grain orientation,using quantitative metallography to calculate volume fraction of ferrite and pearlite and their true strain,the results show th... |
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| Keywords: | high strength medium carbon steel wire drawing deformation true strain microstructure pseudo-eutectoid treatment |
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