Title of article
Evaluation of microstructural effects on mechanical properties of CT80 grade coiled tubing steel
Author/Authors
Ghiasi ، Hasan Technology Development Institute - Academic Center for Education, Culture, and Research
From page
2155
To page
2161
Abstract
The microstructure formation and mechanical properties of coiled tube CT80 grade steel was investigated with different heat treatments. Optical Microscopy (OM) and Scanning Electron Microscopy (SEM) were used to evaluate the microstructure. Acicular ferrite, polygonal and quasipolygonal ferrite, granular bainite, martensite, pearlite, and small MartensiteAustenite (MA) islands with the banding structure were revealed in original and heat treated samples. In order to assess the effect of grain size and microstructure, mechanical properties were evaluated by hardness, charpy impact, tensile, and fatigue life tests. The best mechanical properties by tensile and fatigue test is obtained from the normalized specimen with the grain size of ASTM 13.
Keywords
CT80 Grade Coiled Tubing Steel , microstructure , Heat treatment , mechanical properties , Fatigue life
Journal title
Scientia Iranica(Transactions B:Mechanical Engineering)
Journal title
Scientia Iranica(Transactions B:Mechanical Engineering)
Record number
2631257
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