Microstructure, hardness and residual stress distribution of dissimilar metal electron beam welds: maraging steel and high strength low alloy steel
| Autor: | V. Venkateswara Rao, A. V. Sita Rama Raju, G. Madhusudhan Reddy |
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| Rok vydání: | 2010 |
| Předmět: |
High-strength low-alloy steel
Materials science Mechanical Engineering Alloy steel Metallurgy Welding engineering.material Condensed Matter Physics Indentation hardness law.invention Compressive strength Mechanics of Materials law Residual stress Electron beam welding engineering General Materials Science Composite material Maraging steel |
| Zdroj: | Materials Science and Technology. 26:1503-1512 |
| ISSN: | 1743-2847 0267-0836 |
| DOI: | 10.1179/026708309x12547309760885 |
| Popis: | The present investigation reports on a study that has been taken up to develop an understanding of the electron beam welding characteristics of similar and dissimilar combination of maraging steel and high strength low alloy steel, which are in the hardened condition, i.e. maraging steel, in a solution that was in treated and aged condition, whereas high strength low alloy steel in a quenched and tempered condition before welding. The joint characterisation studies include microstructural examination, microhardness survey across the weldment and measurement of residual stresses. Maraging steel weld metal is under compressive stress rather than tensile stress as observed in low alloy steel welds because the martensite transformation occurs at a relatively low temperature. It has been observed that, in dissimilar metal welds, tensile stress is observed at the fusion boundary of low alloy steel and weld metal, whereas compressive stress is obtained at the location between weld and maraging steel fusi... |
| Databáze: | OpenAIRE |
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