Development of a New Magnesium Alloy with Improved Ductility to Enable Joining via Self-Piercing Riveting (SPR)

开发一种具有更高延展性的新型镁合金，可通过自冲铆接 (SPR) 进行连接

• 批准号: 516119-2017
• 负责人: Pekguleryuz, Mihriban
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639488
• 关键词: Development; New; Magnesium; Alloy; Improved

Meridian Lightweight Technologies (MLT) is the largest supplier of lightweight magnesium (Mg) die castingsin the world, serving most of the global automotive manufacturers on three continents. To develop a new Mgapplication, the organization urgently needs a new Mg alloy which can be fastened by Self-Piercing Riveting(SPR) technology. SPR, successfully used to join other metals in automotive components, shows lack ofsuccess and cracking when Mg is in the lower layer of fastening components. MLT, in their internalinvestigations has shown that different Mg alloys have different degree of cracking in the SPR process andbelieves a properly designed Mg alloy could completely eliminate the cracking issue. The new Mg alloy shouldhave good SPR response and offer mechanical, corrosion, casting performance, recyclability and cost similar tothe AM50A Mg alloy. The knowledge generated in this project will give the industrial partner a competitiveedge to develop new business, to innovate, and to secure higher market share. HQP trained in this project willhave key expertise in the lightweight transport applications. They will be positioned to advance the Mgtransformation industry and have transferable skills in electron microscopy, XRD, mechanical testing andcomputational materials engineering. The lightweighting using Mg will have key environmental benefits. CO2emissions from the transportation sector currently contribute 25% of Canada's total greenhouse gas emissions(GHGs) and the government has a target for reducing GHGs by 45-65% by 2050. 10% saving in vehicle weightleads to 6-8% fuel economy, which translates (during the life time of a car) to 17-20 kg reduced emissions ofCO2, per kg of vehicle weight reduced. Another key benefit is value creation in Canada. The automotivesector contributes 12% of Canada's manufacturing Gross Domestic Product (GDP) with more than 550,000jobs. Creating expertise and a technology-base in the Mg automotive parts industry is very important forCanada's global competition, both to sustain the current level and to enable future technologies of electric, fuelcell, and hybrid powered vehicles creating opportunities for new job creation, and environmental sustainability.

Meridian Lightweight Technologies（MLT）是全球最大的轻质镁（Mg）压铸产品供应商，为全球三大洲的大多数汽车制造商提供服务。为了开发新的镁应用，该组织迫切需要一种可以通过自冲铆接（SPR）技术紧固的新型镁合金。SPR已成功地应用于汽车零部件中其它金属的连接，但当Mg位于紧固件的下层时，SPR的连接效果不佳，甚至出现开裂。MLT在他们的内部调查中表明，不同的镁合金在SPR过程中有不同程度的开裂，并认为适当设计的镁合金可以完全消除开裂问题。新型镁合金应具有良好的SPR响应，并提供与AM 50 A镁合金相似的机械、腐蚀、铸造性能、可回收性和成本。在这个项目中产生的知识将给工业合作伙伴一个竞争优势，以开发新的业务，创新，并确保更高的市场份额。在此项目中培训的HQP将在轻型运输应用方面具有关键的专业知识。他们将被定位为推进镁转化行业，并在电子显微镜，XRD，机械测试和计算材料工程方面拥有可转移的技能。使用镁的轻量化将具有关键的环境效益。交通运输部门的二氧化碳排放量目前占加拿大温室气体排放总量的25%，政府的目标是到2050年将温室气体排放量减少45-65%。车辆重量减轻10%，可节省6-8%的燃油经济性，即在汽车的使用寿命内，每减少1公斤车辆重量，可减少17-20公斤的二氧化碳排放量。另一个关键的好处是在加拿大创造价值。汽车行业贡献了加拿大制造业国内生产总值（GDP）的12%，提供了超过55万个就业岗位。在镁汽车零部件行业创造专业知识和技术基础对于加拿大的全球竞争非常重要，既可以维持目前的水平，也可以使未来的电动，燃料电池和混合动力汽车技术为创造新的就业机会和环境可持续性创造机会。