未再结晶区控轧控冷工艺对低碳高铌钢组织的影响
Effect of Controlled Rolling and Cooling in Non-recrystallization Zone on Microstructure of Low Carbon High Niobium Steel
摘 要
利用热模拟试验机研究了低碳高铌钢在不同控轧控冷参数下组织的变化规律。结果表明: 随着变形温度的降低和变形量的增加, 准多边形铁素体的含量增加, 粒状贝氏体的含量减少, 贝氏体的形貌逐渐由板条状变为粒状; 当冷速低于5 ℃·s-1时, 形成由铁素体和珠光体组成的组织, 当冷速高于5 ℃·s-1时, 组织中的贝氏体含量随之增加, 晶粒明显更加细小均匀; 试样的显微硬度随着冷速的增加而逐渐增大。
未再结晶区
先共析铁素体
贝氏体
显微硬度
low carbon high niobium steel
non-recrystallization zone
proeutectoid ferrite
bainite
micro-hardness
Abstract
Microstructure of low carbon high niobium steel under the conditions of different controlling rolling and cooling parameters was studied by thermomechanical simulator. The results show that the amount of ferrite increased and the amount of bainite decreased with the decrease of temperature and the increase of deformation, and the morphology of the lathe bainite became granular gradually. When the cooling rate was lower than 5 ℃·s-1, the microstructure was constituted by ferrite and pearlite, and when the cooling rate was higher than 5 ℃·s-1, the amount of bainite increased and the grains were smaller and more uniform. The micro-hardness of tested steel increased with the increase of cooling rate.
中图分类号 TG335.11
所属栏目 材料性能及其应用
基金项目 高等学校博士学科点专项科研基金资助项目(20105314120008); 云南省自然科学基金资助项目(2009ZC004X)
收稿日期 2011/12/31
修改稿日期 2012/10/9
网络出版日期
作者单位点击查看
备注钟荣(1985—), 男, 江西赣州人, 硕士研究生。
引用该论文: ZHONG Rong,ZHANG Zhi-Bo,YIN Shu-biao,LIU Qing-you,WANG Hua-kun. Effect of Controlled Rolling and Cooling in Non-recrystallization Zone on Microstructure of Low Carbon High Niobium Steel[J]. Materials for mechancial engineering, 2013, 37(1): 59～62
钟荣,张志波,阴树标,刘清友,王华昆. 未再结晶区控轧控冷工艺对低碳高铌钢组织的影响[J]. 机械工程材料, 2013, 37(1): 59～62
被引情况:
【1】狄 嫣,王畅畅,贾书君,刘清友,彭巨擘, "轧制工艺对经济型X80管线钢组织和显微硬度的影响",机械工程材料 39, 51-54(2015)
【2】方琪,董元,耿宽宽,孙伟,王家南, "含稀土高铌钢的等温弛豫行为",机械工程材料 40, 107-110(2016)
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参考文献
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【2】常大勇, 刘雅政, 何建中, 等.含Nb管线钢动态再结晶特性的实验研究[J].轧钢, 2005, 22(2): 12-15.
【3】LANZAGORTA J L, JORGE-BADIOLA D, GUTIéRREZ I. Effect of the strain reversal on austenite-ferrite phase transformation in a Nb-microalloyed steel[J].Materials Science and Engineering A, 2010, 527: 934-940.
【4】杨旭宁, 康永林, 于浩, 等.X70针状铁素体管线钢中M/A岛的工艺控制[J].轧钢, 2007, 24(4): 7-10.
【5】ZHONG Yong, XIAO Fu-ren, ZHANG Jing-wu , et al.In situ TEM study of the effect of M/A films at grain boundaries on crack propagation in an ultra-fine acicular ferrite pipeline steel[J].Acta Materialia, 2006, 54: 435-443.
【6】赵莉萍, 冯岩, 庞在广.Nb对低碳微合金钢相变的影响[J].包头钢铁学院学报, 2005, 24(3): 254-257.
【7】衣海龙, 杜林秀, 王国栋, 等.奥氏体变形对铌微合金钢贝氏体相变的影响[J].材料科学与工艺, 2008, 16(3): 442-444.
【8】贾志鑫, 衣海龙, 刘嵩韬, 等.控轧控冷参数对含铌微合金钢组织的影响[J].机械工程材料, 2006, 30(9): 7-9.
【9】曲锦波, 单以银, 赵明纯, 等.加速冷却对控轧管线钢组织和性能的影响[J].钢铁, 2001, 36(9): 46-49.
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