|
|
Investigation of Cross Section Microstructure of the Steel Bar With Micro Alloying Controlled Rolling and Controlled Cooling Technique |
CAO Chong1,ZOU Rong1,WU Guang-yao1,CHEN Wei2 |
1. Technology and Quality Department of Wukun Xinxing Steel Co., Ltd., Yuxi 653104, Yunnan, China 2. Technology Center of Wukun Steel Co., Ltd., Kunming 650302, Yunnan, China |
|
|
Abstract The cross section microstructure of the steel bar with micro alloying controlled rolling and controlled cooling technique as well as the reasons of different compositions to the microstructures were investigated. It is found that the segregation of elements (P,Si and Mn et al.) distributes like stripping which results in the such stripping microstructure for steel 20MnSi and 20MnSiV during rolling. The 20MnSiNb steel can not be recrystallized below 1050℃ for the pinning by Nb and its compound containing C and N elements. The proeutectoid ferrite is formed homogemously in grain boundaries of deformation austenite and interior of deformation zone, then, the pearlite belt is separated out in grain boundaries of deformation austenite (between the grain boundaries proeutectoid ferrite and austenite). The bainite strip is generated in the grain of deformation austenite during last cooling stage. The proper order precipitation of the microstructure of the samples shows as follow: grain boundaries of deformed austenite and deformed band of deformed austenite, segregation of elements, grain boundaries of recrystallization austenite.
|
Received: 17 August 2012
Published: 18 June 2013
|
|
|
|
[5] |
王国栋.新一代控制轧制和控制冷却技术与创新的热轧过程[J]. 东北大学学报(自然科学版),2009,30(7):913~914
|
[1] |
Klaus V,R.C. Guimarues. Effect of Niobium Works Steels and Application.微合金化技术[J].2002,2(2):49~53
|
[6] |
王有铭,李曼云,韦光.钢材的控制轧制和控制冷却[M].北京:冶金工业出版社,1995.30~36
|
[2] |
戢景文,车韵怡,刘爱生等.钢铁中稀土合金化的内耗研究及其理论[J].中国稀土学报.1996,14(4):350~359
|
[7] |
陈伟,施哲,赵宇等.铌微合金化和控冷工艺开发HRB500抗震钢筋[J].材料热处理学报.2010,31(7):77~82
|
[3] |
苏世怀,孙维,汪开忠.铌微合金化技术在H型钢生产中的应用[J].微合金化技术.2011(1):53~58
|
[8] |
蒋艳菊.超快速冷却HRB500IV螺纹钢筋的生产[C].2007年中国钢铁年会论文集.北京冶金工业出版社,2007:732~738
|
[9] |
潘金生,仝健民,田民波.材料科学基础[M].清华大学出版社,1998:544~545
|
[4] |
小指军夫.控制轧制控制冷却一一改善钢材材质的轧制技术发展[M].李伏桃,陈岿,译.北京:冶金工业出版社,2002
|
[10] |
李文卿,王连伟.控制轧制和控制冷却对16Mn钢板带状组织的影响[J].物理测试,1990;(4):23~26
|
[5] |
王国栋.新一代控制轧制和控制冷却技术与创新的热轧过程[J]. 东北大学学报(自然科学版),2009,30(7):913~914
|
[11] |
雍歧龙,马鸣图.微合金钢-物理和力学冶金[M].冶金工业出版社,1989:105~120
|
[6] |
王有铭,李曼云,韦光.钢材的控制轧制和控制冷却[M].北京:冶金工业出版社,1995.30~36
|
[7] |
陈伟,施哲,赵宇等.铌微合金化和控冷工艺开发HRB500抗震钢筋[J].材料热处理学报.2010,31(7):77~82
|
[12] |
齐俊杰,黄运华,张跃.微合金化钢[M].冶金工业出版社,2006:45~47
|
[8] |
蒋艳菊.超快速冷却HRB500IV螺纹钢筋的生产[C].2007年中国钢铁年会论文集.北京冶金工业出版社,2007:732~738
|
[13] |
齐俊杰,黄运华,张跃.微合金化钢[M].冶金工业出版社,2006:96~99
|
[9] |
潘金生,仝健民,田民波.材料科学基础[M].清华大学出版社,1998:544~545
|
[14] |
翁宇庆,柳得橹,傅杰等.超细晶钢[M].冶金工业出版社,2003:37
|
[10] |
李文卿,王连伟.控制轧制和控制冷却对16Mn钢板带状组织的影响[J].物理测试,1990;(4):23~26
|
[11] |
雍歧龙,马鸣图.微合金钢-物理和力学冶金[M].冶金工业出版社,1989:105~120
|
[12] |
齐俊杰,黄运华,张跃.微合金化钢[M].冶金工业出版社,2006:45~47
|
[13] |
齐俊杰,黄运华,张跃.微合金化钢[M].冶金工业出版社,2006:96~99
|
[14] |
翁宇庆,柳得橹,傅杰等.超细晶钢[M].冶金工业出版社,2003:37
|
[15] |
Tamura I,Sekire H,Tancaka T,Ouchi C. Thermomechanical Processing of HSLA[C]. London: Butterworth and Co.1988:80
|
[16] |
储凯,许斌,李先民等.机械工程材料[M].重庆大学出版社,1998:68
|
[17] |
周乐育,刘雅政. Nb 对 C-Si-Mn-Cr 双相钢相变规律、组织和性能的影响[J]. 钢铁, 2008, 43(7):77.
|
[15] |
Tamura I,Sekire H,Tancaka T,Ouchi C. Thermomechanical Processing of HSLA[C]. London: Butterworth and Co.1988:80
|
[18] |
朱兴元、刘 忆等.金属学与热处理[M].中国林业出版社,2006:113~114
|
[16] |
储凯,许斌,李先民等.机械工程材料[M].重庆大学出版社,1998:68
|
[17] |
周乐育,刘雅政. Nb 对 C-Si-Mn-Cr 双相钢相变规律、组织和性能的影响[J]. 钢铁, 2008, 43(7):77.
|
[18] |
朱兴元、刘 忆等.金属学与热处理[M].中国林业出版社,2006:113~114
|
[1] |
CAO Yan-guang, LI Zhao-dong, DING Can-can, ZHANG Jin-wen, YONG Qi-long, GAO Jian-bing. Effect of niobium addition on hardenability of high-speed railway axle steel[J]. Iron and Steel, 2020, 55(6): 107-112. |
[2] |
XIAO Da-heng, TANG Wei, LUO Deng, WANG Zhen, XIE Zhen-jia, SHANG Cheng-jia. Microstructure and properties of low temperature steel for ultra large liquefied petroleum gas carrier[J]. Iron and Steel, 2020, 55(4): 82-87. |
[3] |
XING Xian-qiang, CAO Wen-quan, WANG Cun-yu. Bond structure of 55SiCr steel used for coil springs of automotive suspension system[J]. Iron and Steel, 2020, 55(3): 68-73. |
[4] |
. Study on NbC Precipitate of Nb Microalloying Mid-carbon Steel[J]. , 2020, 45(3): 0-0. |
[5] |
ZHANG Quan-xin,ZHU Bin,XU Hong-hao,CAO Zheng-kuan. Cause analysis of cracking of 40CrNiMo steel shaft[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(2): 32-. |
[6] |
XIA Bing,CHEN Bin,HOU Zong-bao,ZHAO Zhi-hai. Cause analysis of cold bending cracking of Q235B H-beam steel[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(2): 45-. |
|
|
|
|