The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
M-A constituents in local brittle zones of pipeline steel
Author(s): 
Pages: 13-15
Year: Issue:  1
Journal: WELDING TECHNOLOGY

Keyword:  X70管线钢局部脆化区M-A组元;
Abstract: 采用焊接热模拟、金相分析及透射电镜研究了X70管线钢焊接局部脆化区M-A组元的形态、数量、分布及在透射电镜下的精细结构、形貌特征.结果表明,粗晶区M-A组元以块状为主,有少量呈长条状.再热临界粗晶区的M-A组元数量急剧增多,基本都是狭长的长条状,分布比较密集,M-A组元相邻间距较小,平均弦长较大,为4.21 μm.透射电镜下条状M-A组元一般分布于贝氏体铁素体的板条界面处,块状M-A组元有的呈不规则形状,有的呈三角形.M-A组元中马氏体的精细结构为孪晶亚结构.
Related Articles
No related articles found