Effects of Titanium alloy powder characteristics on the quality of parts produced by additive manufacturing and how to control them

钛合金粉末特性对增材制造零件质量的影响及控制

• 批准号: 554595-2020
• 负责人: Bocher, Philippe
• 金额: $ 2.19万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=706029
• 关键词: Effects; Titanium; alloy; powder; characteristics; Effects; Titanium; alloy; powder; characteristics

Metal powders are used in additive manufacturing (AM) processes. With these processes, parts with uniform microstructure and acceptable porosity levels are produced. If the quality of the powder is acceptable, optimized manufacturing parameters can be defined to make the process robust. Current technical challenges include the possibility of operating metal powders with variable characteristics. The process parameters in AM will then have to be adapted to certify minimum in-service properties for the produced parts. In particular, the particle size distribution of powders influences the microstructure, the fraction and maximum size of defects on the surface or in the microstructure. These defects affect mechanical properties and service performance. The process parameters may need to be adapted to ensure that the manufactured parts are in a proper manner. For rapid production a combination of 1) Identifying and monitoring the effect of metallic powders characteristics and proper process parameters on final service properties and 2) Certifying intended service properties of the manufactured parts is essential. This combination could be demonstrated as main objective of industry 4.0. It is necessary to have reproducible and reliable processes, whatever the batch of powder used, and to be able to produce batches of a single part with the required properties. So, this project is defined in order to better document the challenges mentioned above and find solutions to increase the versatility of additive manufacturing.

金属粉末用于增材制造（AM）工艺。通过这些过程，产生了具有均匀的微观结构和可接受的孔隙率水平的部分。如果粉末的质量是可以接受的，则可以定义优化的制造参数以使过程可靠。当前的技术挑战包括具有可变特性的操作金属粉末的可能性。然后，AM中的过程参数必须适应以证明生产零件的最低服务属性。特别是，粉末的粒度分布会影响微观结构，表面或微观结构中缺陷的分数和最大尺寸。这些缺陷会影响机械性能和服务性能。可能需要调整过程参数，以确保制造零件以适当的方式进行。对于快速生产，一个组合1）识别和监视金属粉末特性和适当的过程参数对最终服务属性的影响，以及2）认证制成部分的预期服务属性是必不可少的。该组合可以证明是行业4.0的主要目标。无论使用什么粉末，无论使用什么粉末，都必须具有可重现和可靠的过程，并能够生产具有所需属性的单个零件的批次。因此，为了更好地记录上述挑战，并找到了增加添加剂制造的多功能性的解决方案。