About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Steels for Sustainable Development IV
|
| Presentation Title |
Toughness Response of Ni-Mo Alloyed Heavy Gauge Plates to Quenching and Tempering Conditions |
| Author(s) |
Xabier Azpeitia, Unai Mayo, Nerea Isasti, Eric Detemple, Hardy Mohrbacher, Pello Uranga |
| On-Site Speaker (Planned) |
Pello Uranga |
| Abstract Scope |
The toughness performance of quenched and tempered (Q&T) heavy gauge plates is critically influenced by the interplay between alloy design, thermal cycles, and plate thickness. In this study, the effects of key processing parameters, such as austenitization strategy and quenching cooling rate on the microstructure and low-temperature toughness of thick plates were analyzed. Based on two different chemical compositions of Ni and Mo alloyed plates, hot rolling conditions were reproduced in the laboratory using industrially relevant Q&T parameters and evaluated through microstructural characterization, tensile tests, and Charpy impact testing. Results show that depending on the austenitization strategy, tempered martensite microstructures change and consequently Charpy performance could be affected. The observed variations in toughness are discussed in terms of microstructural contributions, revealing the complex balance required to optimize strength and toughness in Q&T plates. The findings provide insights for tailoring processing windows to ensure reliable performance in demanding structural applications. |