Influences of microstructure and texture on crack propagation path of X70 acicular ferrite pipeline steel |
| |
Authors: | Hao Yu |
| |
Affiliation: | School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| |
Abstract: | The aspects of two pipeline steels with different technologies were investigated by using transmission electron microscopy (TEM) and electron back-scattered diffraction (EBSD).The microstructure presents a typical acicular ferrite characteristic with free particles of martensite/austenite (M/A) constituent,which distributes in grains and at grain boundaries.The bulk textures of the pipeline steel plate are {112}<110> and <111> fibers,respectively,and the {112} <110> component is the favorable texture benefiting for drop weight tear test.Moreover,low angle boundaries and low coincidence site lattice boundaries are inactive and more resistant to fracture than high energy random boundaries. |
| |
Keywords: | pipeline steel acicular ferrite microscope texture crack propagation |
本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录! |
|