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激光粉末床的过程驱动的结构和属性演变新开发的AISI 316L不钢的激光粉末床融合
Amir Behjat1,2,3, Morteza Shamanian1, Fazlollah Sadeghi4,5
1Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
Materials (Basel, Switzerland)
|July 30, 2025
概括
使用激光粉床融合 (L-PBF) 开发的新型AISI 316L合金显示性能有所改善. 优化L-PBF过程参数允许在这种先进的金属添加剂制造材料中量身定制的微观结构和特性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 金属增材制造 (AM) 面临着材料可加工性和功能性方面的挑战.
- 开发新型合金对于推进AM能力至关重要.
研究的目的:
- 开发和描述一种新的基于AISI 316L的合金,用于激光粉床融合 (L-PBF).
- 研究L-PBF工艺参数,微观结构和新合金的特性之间的关系.
主要方法:
- 激光粉末床融合 (L-PBF) 过程参数的优化.
- 使用电子显微镜进行微结构分析.
- 电子反射衍射 (EBSD) 用于纹理和误导分析.
主要成果:
- 激光能量密度的增加减少了孔隙性和表面粗度.
- 在奥氏体阶段观察到铜的均分布.
- 沿着构建方向确定了一个强大的晶体纹理,包括戈斯纹理.
结论:
- 开发的AISI 316L合金在AM应用中表现出增强的性能.
- 对于定制微观结构和属性,L-PBF过程参数控制是有效的.
- 这项研究为新型AM合金开发提供了关键的过程结构属性见解.
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