日经BP精选：日本验证3D打印机制造核聚变反应堆材料

Core Viewpoint - The article discusses advancements in laser nuclear fusion technology, focusing on the development of materials for fusion reactors, particularly through the use of metal 3D printing to enhance durability and reduce production costs [3][4]. Group 1: Industry Developments - Tokyo University of Science is conducting durability tests on structural materials made from FeCrAl alloy, which consists of iron (Fe), chromium (Cr), and aluminum (Al), aimed at being used in laser nuclear fusion reactors [3]. - The goal is to achieve practical power generation by the 2030s, starting with small-scale reactors of 5 to 10 meters [3]. - If the durability of the alloy processed by metal 3D printing is validated, it is expected to shorten construction time and lower production costs for nuclear fusion reactors [3]. Group 2: Technological Innovations - The use of metal 3D printing for processing the FeCrAl alloy has shown promising results, with no detected defects such as voids, and the structure is similar to previously tested durable samples [4].