[1]李松林,曹逻炜,韩志远,等.高温服役对HP40Nb 炉管焊接接头组织及性能的影响[J].中国材料进展,2020,(2):133-137.[doi:10.7502/j.issn.1674-3962.201905005]
　LI Songlin,CAO Luowei,HAN Zhiyuan,et al.Effect of High Temperature Service on Microstructure and Properties of HP40Nb Furnace Tube Joint[J].MATERIALS CHINA,2020,(2):133-137.[doi:10.7502/j.issn.1674-3962.201905005]
点击复制

高温服役对HP40Nb 炉管焊接接头组织及性能的影响()
分享到：

中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2020年第2期
页码:
133-137
栏目:
出版日期:
2020-02-29

文章信息/Info

Title:
Effect of High Temperature Service on Microstructure and Properties of HP40Nb Furnace Tube Joint
文章编号:
1674-3962(2020)02-0133-05
作者:
李松林1; 曹逻炜2; 韩志远2; 程方杰1; 3
（1.天津大学材料科学与工程学院,天津 300350）（2.中国特种设备检测研究院，北京100029）（3.天津市现代连接技术重点实验室,天津 300350）
Author(s):
LI Songlin1; CAO Luowei2; HAN Zhiyuan2; CHENG Fangjie1; 3
(1.School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China) (2.China Special Equipment Inspection and Research Institute, Beijing 100029, China) (3.Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, China)
关键词:
HP40Nb; 焊接接头; 高温服役; 微观组织; 力学性能
Keywords:
HP40Nb;  welded joints;  high temperature service;  microstructure;  mechanical properties
分类号:
TG407
DOI:
10.7502/j.issn.1674-3962.201905005
文献标志码:
A
摘要:
以一段服役7年左右的HP40Nb制氢转化炉管为对象，研究了高温服役过程对其焊接接头微观组织及力学性能的影响。观察分析了不同区域显微组织的特征和析出相的形态及分布情况,并测定了各区域的硬度、强度和冲击韧性等性能参数。结果表明：HP40Nb炉管焊接接头的熔敷金属中只有少量碳化物析出，而在母材中有大量的碳化物析出并聚集在奥氏体晶界上形成网链状；接头的抗拉强度只有少量下降，但其延伸率和冲击韧性均发生严重下降。
Abstract:
In this paper, the effects of high temperature service process on the microstructure and mechanical properties of welded joints were studied in a section of HP40Nb hydrogen reformer tubes that have been in service for about 7 years. The characteristics of microstructure and the morphology and distribution of precipitated phases in different regions were observed and analyzed. The properties such as hardness, strength and impact toughness of each region were determined. The results showed that only a small amount of carbides were precipitated out from the deposited metal, lots of carbides were precipitated in the base metal and aggregated on the austenite grain boundary to form a network chain; the tensile strength of the joints only declined a little, but its elongation and impact toughness had been seriously reduced.

备注/Memo

备注/Memo:
收稿日期：2019-05-08修回日期：2019-05-18 基金项目：国家重点研发计划项目（2017YFF0210401）第一作者：李松林，男，1995年生，硕士研究生通讯作者：程方杰，男，1971年生，教授，博士生导师， Email:chfj@tju.edu.cn
更新日期/Last Update: 2020-03-23