[1]谢 飞,张炳生,潘建伟.乙烯裂解炉管服役前后材料组织分析[J].常州大学学报(自然科学版),2005,(01):5-8.
 XIE Fei,ZHANG Bin- sheng,PAN Jian- wei.Microstructure of Ethylene Cracking Tubes before and after Service[J].Journal of Changzhou University(Natural Science Edition),2005,(01):5-8.
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乙烯裂解炉管服役前后材料组织分析()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2005年01期
页码:
5-8
栏目:
出版日期:
2005-02-25

文章信息/Info

Title:
Microstructure of Ethylene Cracking Tubes before and after Service
作者:
谢 飞1 张炳生2 潘建伟1
1.江苏工业学院材料科学与工程系, 江苏 常州 213016; 2.江苏工业学院规划与政策办公室, 江苏 常州 213016
Author(s):
XIE Fei1 ZHANG Bin- sheng2 PAN Jian- wei1
1. Department of Materials Science and Engineering, Jiangsu Polytechnic University, Changzhou 213016, China; 2. Off ice of Plan and Policy, Jiangsu Polytechnic U niversity, Changzhou 213016, China
关键词:
组织 乙烯裂解炉管 渗碳 耐热钢
Keywords:
microst ructure ethy lene cracking tube carburizat ion heat resistant steel
分类号:
TG 115. 21; T G 142.73; TQ 050. 9
文献标志码:
A
摘要:
观察分析了服役前后Fe- Cr- Ni 耐热钢乙烯裂解炉管横截面组织。由管外壁向内, 树枝晶的垂直管外壁沿径向生长的 特征逐渐减弱, 直至消失。服役前组织为含过饱和碳的奥氏体和沿晶界分布的碳化物。炉管服役过程的时效与渗碳导致大量碳 化物的析出, 其数量、大小与形态取决于服役温度和时间。析出碳化物影响炉管的性能。
Abstract:
The microstructure of ethylene cracking tubes before and after service was examined and analyzed. The direct ional growth feature of cellular - dendritic crystals grow ing along the direction perpendicular to the tube wall weakened gradually from the external side to the inside. The microst ructure before w as mainly austenite over- saturated w ith carbon and carbides distributed along grain boundaries. Aging and carburization during the service produced precipitation of carbides, the amount, size and forms of which depended on the service time and working temperature. The mechanical properties of the tube were influenced by the precipitation of carbides.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省科技厅应用基础研究基金资助( BJ2000007) ; 教育部留学回国人员科研启动基金资助 作者简介: 谢飞( 1964- ) , 男, 上海人, 博士, 副教授, 主要从事新材料与材料表面工程方面的研究; 本院金属材 料00 级学生张民之、娄培庆、郝小燕、杨丽丹参加了部分实验工作。
更新日期/Last Update: 2005-03-25