Low-Temperature Mechanical Behavior of Super Duplex Stainless Steel with Sigma Precipitation
Abstract
:1. Introduction
2. Experimental Procedure
2.1. Heat Treatment Process
Element (wt. %) | C | Si | Mn | P | S | Ni | Cr | Mo |
---|---|---|---|---|---|---|---|---|
UNS S32750 | 0.016 0.017 | 0.34 0.25 | 0.44 | 0.027 | 0.001 | 6.8 | 25.1 | 4.0 |
2.2. Tensile Test
2.3. Characterization of the Microstructure
3. Results and Discussion
3.1. Effect of the Isothermal Ageing Treatment
Element (wt. %) | C | Si | Mo | Cr | Fe | Ni | Volume Fraction (%) |
---|---|---|---|---|---|---|---|
(a) σ phase | 1.39 | 0.53 | 6.84 | 28.74 | 58.41 | 4.10 | 3.125 |
(b) χ phase | 1.72 | 0.69 | 18.92 | 25.54 | 49.65 | 3.48 | 11.25 |
(c) SDSS | 2.11 | 0.42 | 4.57 | 25.49 | 61.33 | 6.09 | - |
3.2. Effect of Testing Temperature
3.3. Effect of Length of the Microcrack
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Kim, S.-K.; Kang, K.-Y.; Kim, M.-S.; Lee, J.-M. Low-Temperature Mechanical Behavior of Super Duplex Stainless Steel with Sigma Precipitation. Metals 2015, 5, 1732-1745. https://doi.org/10.3390/met5031732
Kim S-K, Kang K-Y, Kim M-S, Lee J-M. Low-Temperature Mechanical Behavior of Super Duplex Stainless Steel with Sigma Precipitation. Metals. 2015; 5(3):1732-1745. https://doi.org/10.3390/met5031732
Chicago/Turabian StyleKim, Seul-Kee, Ki-Yeob Kang, Myung-Soo Kim, and Jae-Myung Lee. 2015. "Low-Temperature Mechanical Behavior of Super Duplex Stainless Steel with Sigma Precipitation" Metals 5, no. 3: 1732-1745. https://doi.org/10.3390/met5031732