Influence of post heat treatments on anisotropy of mechanical behaviour and microstructure of Hastelloy-X parts produced by selective laser melting

By Dacian Tomus, Yangjie Tian, P. Rometsch, M. Heilmaier, Xinhua Wu. 2016

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Additive manufacturing of high-strength crack-free Ni-based Hastelloy X superalloy (2019, background): “Although HIP processing is capable of closing microcracks and improving the fatigue performance of LPBF-fabricated HX parts [16], such processing does result in excessive grain growth and coarsening [21].”
Laser powder bed fusion of Hastelloy X: Effects of hot isostatic pressing and the hot cracking mechanism (2018, methodology): “[17] investigated the influence of post-heat treatment on the anisotropy of mechanical behaviour and the microstructure of LPBF-fabricated Hastelloy X.”
Effect of temperature on the microstructure and tensile properties of micro-crack free hastelloy X produced by selective laser melting (2020, methodology): “As seen in Figure 5 (c), the carbides rich in Cr and Mo as measured by EDX can be related to M23C6 and M6C types of carbides respectively, as found previously in conventional [2] and SLM processed [22,25] Hastelloy X.”