Mechanical Properties of a Thermally-aged Cast Duplex Stainless Steel by in Situ Tensile Test at the Service Temperature
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Microstructural Characterization
3.2. Stress–Strain Behavior
3.3. Slip Mechanism
3.4. Schematic Diagram of Slip Deformation Mechanisms
3.5. Fracture Analysis
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Cr | Ni | Mn | Si | C | P | S | Cu | Mo | Fe |
---|---|---|---|---|---|---|---|---|---|
20.895 | 8.755 | 0.84 | 1.04 | 0.03 | 0.02 | 0.004 | 0.015 | 0.349 | Bal |
Conditions | Yield Stress (MPa) | UTS (MPa) | Uniform Elongation (%) | Total Elongation (%) | Strength Coefficient (MPa) | Strain Hardening Exponent |
---|---|---|---|---|---|---|
As received–20 °C | 249 ± 9 | 548 ± 2 | 31.3 ± 3.1 | 32.9 ± 3.1 | 1290 ± 25 | 0.512 ± 0.030 |
As received–320 °C | 147 ± 4 | 378 ± 11 | 18.1 ± 1.3 | 19.7 ± 1.5 | 1057 ± 18 | 0.477 ± 0.014 |
Aged for 2000 h–320 °C | 165 ± 1 | 427 ± 16 | 17.2 ± 0.7 | 18.1 ± 0.9 | 1154 ± 31 | 0.448 ± 0.009 |
Aged 2000 h annealed 3 h–320 °C | 141 ± 5 | 369 ± 20 | 16.2 ± 1.7 | 17.6 ± 2.8 | 1077 ± 44 | 0.477 ± 0.007 |
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Zhang, Q.; Ma, S.; Jing, T. Mechanical Properties of a Thermally-aged Cast Duplex Stainless Steel by in Situ Tensile Test at the Service Temperature. Metals 2019, 9, 317. https://doi.org/10.3390/met9030317
Zhang Q, Ma S, Jing T. Mechanical Properties of a Thermally-aged Cast Duplex Stainless Steel by in Situ Tensile Test at the Service Temperature. Metals. 2019; 9(3):317. https://doi.org/10.3390/met9030317
Chicago/Turabian StyleZhang, Qingdong, Sida Ma, and Tao Jing. 2019. "Mechanical Properties of a Thermally-aged Cast Duplex Stainless Steel by in Situ Tensile Test at the Service Temperature" Metals 9, no. 3: 317. https://doi.org/10.3390/met9030317