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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >The effects of hot isostatic pressing (HIP) and solubilization heat treatment on the density, mechanical properties, and microstructure of austenitic stainless steel parts produced by selective laser melting (SLM)
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The effects of hot isostatic pressing (HIP) and solubilization heat treatment on the density, mechanical properties, and microstructure of austenitic stainless steel parts produced by selective laser melting (SLM)

机译：热等静压（臀部）和溶解热处理对通过选择性激光熔化（SLM）产生的奥氏体不锈钢部件密度，力学性能和微观结构的影响

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摘要

Despite ongoing optimization, selective laser melting (SLM) technology still cannot guarantee the production of completely defect-free components. This work investigates hot isostatic pressing (HIP) in a nitrogen environment and solubilization heat treatment as methods for improving the quality of 316L stainless steel components produced by SLM. The characteristics of HIP-treated specimens are firstly correlated with the initial density of samples obtained with different SLM process parameters, showing that HIP is effective at eliminating pores in components with high initial density (above 99%) but not in those with low initial density (approximately 94%). Subsequently, the mechanical properties and microstructure of 316L stainless steel specimens produced by SLM are examined in the as-built state and after various post-process conditions including solubilization heat treatment and HIP at pressures from 50 to 2000 bar. The observed effects of post-processing on the porosity and microstructure of each specimen are consistent with hardness and tensile test results, with the benefits and limitations of HIP clarified for future implementation.
机译：尽管持续优化，选择性激光熔化（SLM）技术仍然无法保证完全无缺陷的组件的生产。本作品研究了氮气环境中的热等静压（臀部）和溶解热处理作为提高由SLM产生的316L不锈钢组分的质量的方法。首先与用不同的SLM工艺参数获得的样品的初始密度相关的特征，显示髋关节在消除具有高初始密度的组分（高于99％）的组分中有效，但在初始密度低的组分中是有效的（约94％）。随后，在各种状态和各种后工艺条件下，在包括溶解热处理和50至2000巴的压力下的各种后工艺条件下检查316L不锈钢试样的机械性能和微观结构。观察到对每个试样的孔隙率和微观结构的后处理的影响与硬度和拉伸试验结果一致，具有臀部的益处和局限性澄清了未来的实施。

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