Title of article
Effect of simulated welding thermal cycle on microstructure and mechanical properties of X90 pipeline steel
Author/Authors
Zhao، نويسنده , , Wengui and Wang، نويسنده , , Wei and Chen، نويسنده , , Shaohui and Qu، نويسنده , , Jinbo، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
6
From page
7417
To page
7422
Abstract
The effect of welding thermal cycle simulation on the microstructure and mechanical properties of X90 pipeline steel was investigated by means of microstructure analysis, tensile- and Charpy impact-tests. At the heat input of 15 kJ/cm, the microstructure of coarse-grained heat affected zone is mainly composed of lath bainite and granular bainite, resulting in excellent strength and toughness. At 25 kJ/cm with two thermal cycles, however, strength and impact toughness decrease due to the formation of more polygonal ferrite with coarser grains.
Keywords
X90 pipeline steel , Welding heat input , welding thermal cycle , microstructure , Coarse-grained heat affected zone , mechanical properties
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2011
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2168723
Link To Document