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Conjoint Influence of Heat Treatment, Hot Deformation and Cold Working on the Microstructure and Mechanical Response of a Co-Based Superalloy | ||
| Iranian Journal of Materials Forming | ||
| دوره 8، شماره 3، مهر 2021، صفحه 34-45 اصل مقاله (4.25 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijmf.2021.40550.1182 | ||
| نویسندگان | ||
| Seyed Mohammad Arab* 1؛ Ahmadreza Haghighi2؛ Mahdi Khajepour3؛ Younes Jalalizadeh4؛ Mohammad Mehdi Tavallaei5 | ||
| 1Department of Mechanical Engineering, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran | ||
| 2School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran | ||
| 3Department of Materials Engineering, Shahid Bahonar University of Kerman, Kerman, Iran | ||
| 4School of Metallurgy and Materials Engineering, Sahand University of Technology, Tabriz, Iran | ||
| 5Department of Electroceramics, Faculty of Materials Engineering, Shiraz University of Technology, Shiraz, Iran | ||
| چکیده | ||
| An as-cast HAYNES 25 Co-based superalloy is subjected to a process, including four stages of heat treatment, hot deformation, cold working, and aging. Mechanical properties have been improved after processing; the hardness, tensile and yield strengths are enhanced while the reduction of ductility is reasonable. The process has led to break down the segregated as-cast microstructure and has given a well distributed inter-metallic reinforced microstructure with no segregation. The grain structure also includes the approximately equiaxed grains with a large density of Σ3 twins. The results showed that as the hot deformation plays an important role in the grain refinement and microstructure homogenization, it should be considered as an important phase of the manufacturing process. | ||
| کلیدواژهها | ||
| Co superalloy؛ Cold working؛ Hardness؛ Microstructure؛ Segregation | ||
| مراجع | ||
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