Additive manufacturing (AM) or 3D printing has revolutionized the modern metal manufacturing industry. AM technology allows for fabrication of highly customized 3D objects where both shape and composition can be tailored. Compared to traditional methods, metal AM technology has advantages in saving time and cost. Recent developments in metal AM systems include upgrades in energy source and part resolution, which leads to better part quality and improved reliability. This brief review article summarizes recent developments in metal AM technologies as well as the current challenges and future trends.

中文翻译：

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金属增材制造的最新发展。

增材制造（AM）或3D打印已彻底改变了现代金属制造业。AM技术允许制造高度定制的3D对象，可以在其中定制形状和成分。与传统方法相比，金属增材制造技术在节省时间和成本方面具有优势。金属增材制造系统的最新发展包括能源和零件分辨率的升级，从而提高了零件质量并提高了可靠性。这篇简短的评论文章总结了金属增材制造技术的最新发展以及当前的挑战和未来的趋势。