Microstructure development and defect formation during welding of aluminum alloys

铝合金焊接过程中的微观组织发展和缺陷形成

• 批准号: 386408-2010
• 负责人: Phillion, AndréBernard
• 金额: $ 2.04万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=509915
• 关键词: Microstructure; development; defect; formation; during

Welding processes, such as arc-welding and laser beam welding are increasingly being used to join aluminum alloys in the automotive and aerospace industries due to the potential of increasing process accuracy while reducing manufacturing costs. Although the use of these processes can result in improved material properties along with direct weight savings, certain inherent characteristics such as solidification cracking, microporosity, and heat-affected zone degradation must also be considered. The presence of these defects, even in small quantities, generally results in rejection of the welded part.

由于在降低制造成本的同时提高工艺精度的潜力，焊接工艺（例如电弧焊和激光束焊接）越来越多地用于在汽车和航空航天工业中接合铝合金。尽管使用这些工艺可以沿着直接减轻重量来改善材料性能，但也必须考虑某些固有特征，例如凝固裂纹、微孔性和热影响区降解。这些缺陷的存在，即使是少量的，通常也会导致焊接零件的拒收。