Microalloyed steels possess good strength, toughness and excellent weldability, all of which are necessary attributes for oil and gas pipelines in northern climates. These properties are attributed in part to the presence of nano-sized Nb/Ti carbide precipitates. In order to understand the strengthening mechanisms and to optimize the strengthening effects, it is necessary to quantify the size distribution, volume fraction and chemical speciation of these precipitates. However, characterization techniques suitable for quantifying fine precipitates are limited. A matrix dissolution method has been developed to extract the nano-sized precipitates from microalloyed steels. The results from Grade 100 microalloyed steel are presented in this paper.
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2006 International Pipeline Conference
September 25–29, 2006
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
0-7918-4263-0
PROCEEDINGS PAPER
Quantification of Nano-Sized Precipitates in Microalloyed Steels by Matrix Dissolution
Junfang Lu
,
Junfang Lu
University of Alberta, Edmonton, AB, Canada
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Douglas Ivey
,
Douglas Ivey
University of Alberta, Edmonton, AB, Canada
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Hani Henein
Hani Henein
University of Alberta, Edmonton, AB, Canada
Search for other works by this author on:
Junfang Lu
University of Alberta, Edmonton, AB, Canada
Douglas Ivey
University of Alberta, Edmonton, AB, Canada
Hani Henein
University of Alberta, Edmonton, AB, Canada
Paper No:
IPC2006-10600, pp. 635-642; 8 pages
Published Online:
October 2, 2008
Citation
Lu, J, Ivey, D, & Henein, H. "Quantification of Nano-Sized Precipitates in Microalloyed Steels by Matrix Dissolution." Proceedings of the 2006 International Pipeline Conference. Volume 3: Materials and Joining; Pipeline Automation and Measurement; Risk and Reliability, Parts A and B. Calgary, Alberta, Canada. September 25–29, 2006. pp. 635-642. ASME. https://doi.org/10.1115/IPC2006-10600
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