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Effect of tempering temperature on microstructure and mechanical properties of low alloy high strength steel |
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| รหัสดีโอไอ | |
| Creator | Gadadhar SAHOO |
| Title | Effect of tempering temperature on microstructure and mechanical properties of low alloy high strength steel |
| Contributor | Vaibhav YADAV, Anil Kumar SINGH |
| Publisher | Metallurgy and Materials Science Research Institute, Chulalongkorn University |
| Publication Year | 2561 |
| Journal Title | Journal of Metals, Materials and Minerals |
| Journal Vol. | 28 |
| Journal No. | 1 |
| Page no. | 16-21 |
| Keyword | Austenization, Impact testing, Quenching, Tempering |
| URL Website | http://ojs.materialsconnex.com/index.php/jmmm/index |
| Website title | Journal of Metals, Materials and Minerals |
| ISSN | 8576149 |
| Abstract | The effect of tempering temperature on the microstructure and mechanical properties of a low alloy steel has been investigated using optical microscopy, hardness testing and Charpy V-notch impact testing at -20ฐC, -40ฐC and -60ฐC. At first, the laboratory based study revealed that tempering the specimens at 650ฐC resulted in lowest hardness with highest impact energy. Based on this, the heat-treated industrial steel showed sufficiently high toughness after Charpy V-notch impact testing at -40ฐC. Fractography after impact testing showed predominately ductile dimple rupture in the sample tempered at 650ฐC. The presence of decomposed martesitic laths in prior austenite was noticed in the specimens tempered at 650ฐC and 680ฐC. |
