Research in additive manufacturing (AM) of alloys has seen significant developments, particularly in producing high-performance components for industries like nuclear power, aerospace, automotive, and the hydrogen energy sector. While AM offers advantages like creating complex geometries and minimizing material waste, challenges such as hydrogen embrittlement must be addressed for safer application. Post-processing techniques like heat treatment are crucial for enhancing the microstructure and mechanical properties of AMed samples, with a focus on reducing defects and improving characteristics like hydrogen embrittlement resistance. Studies have shown that heat treatment at specific temperatures can lead to improved hydrogen compatibility in AMed samples, offering potential for applications in harsh environments and hydrogen-related industries. Further research on the microstructural evolution and the effects of heat treatments on hydrogen embrittlement behavior in AMed alloys is essential for advancing the understanding and performance of additively manufactured components.