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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part L. Journal of Materials: Design and Application >The effect of post-weld heat treatments on the microstructure and mechanical properties of maraging steel laser weldments
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The effect of post-weld heat treatments on the microstructure and mechanical properties of maraging steel laser weldments

机译:The effect of post-weld heat treatments on the microstructure and mechanical properties of maraging steel laser weldments

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摘要

The role of post-weld heat treatments on the microstructure and mechanical properties of maraging steel laser welds has been investigated. The post-weld heat treatments are (a) direct ageing at 480℃/3h/air cooling, (b) solutionizing at 815℃/1h/air cooling + at 480℃/3h/air cooling, and (c) homogenization at 1150℃/1h/air cooling + solutionizing at 815℃/1h/air cooling + ageing at 480℃/3 h/air cooling. The welded + aged and welded + solutionized + aged microstructure consisting of reverted austenite exhibited low strength and toughness. Homogenization treatment resulted in a microstructure free from reverted austenite and subsequent solutionizing and ageing resulted in improved strength and impact toughness.

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