SBIR Phase I: Economical Fabrication of Bulk Metallic Glass Sheets through Roll-Stretching

SBIR 第一阶段：通过辊拉伸经济地制造块状金属玻璃板

• 批准号: 1448090
• 负责人: Evgenia Pekarskaya
• 金额: $ 14.99万
• 依托单位: Supercool Metals LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-01-01 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1448090&HistoricalAwards=false
• 关键词: SBIR; Phase; Economical; Fabrication; Bulk

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) Phase I project is that it will provide the metal manufacturing industry with bulk metallic glass (BMG) sheets. BMGs are fundamentally different from, and advantageous to, crystalline metals, as they are stronger than most crystalline metals but at the same time shapeable like plastics. The key to industrializing BMGs is providing a practical feedstock material, such as BMG sheets, with which manufactures can use BMGs unique processability to fabricate complex shapes at highest precision and ease through thermoplastic forming (TPF) methods. A successful outcome of proposed research will empower manufacturers to make use of BMGs much more broadly and effectively, as BMG sheets will bridge the gap between currently expensive, customized BMG components of limited geometrical variety, and affordable, standardized BMG feedstock material in the future. Overall, the proposed work will lay a critical foundation to enable much broader commercial application of BMGs, such as in Biomedical, Nano-imprint, Electronic casing, Defense, Aerospace, or Automotive, and open an opportunity for US manufacturing to be at the center of this new manufacturing paradigm.This project evaluates the recent scientific discovery of TPF based roll-stretching of BMGs as a low force deformation method. We expect our findings to lead to a better understanding of TPF-based processes for BMGs. Specifically for TPF-based sheet fabrication, proposed work will reveal the process stability and how stability is affected by processing parameters. Proposed research will also determine the effects of TPF-based processing on the mechanical properties of the BMG and will help identify suitable BMG types for roll-stretching. At the same time, our study will provide detailed insights into commercial feasibility of BMG sheets. Process viability will be evaluated considering processing time, process robustness and repeatability, dimensional accuracy, surface finish, capital investment and material cost. The identification of processing parameters and process requirements such as temperature gradients and deformation conditions required for a high stability which is quantified in the sheet thickness variation will build the foundation for the design and realization of a commercially viable roll-stretch process and apparatus. In addition, proposed work will also enhance the theoretical understanding of roll-stretching which lay the foundation for a predictable and quantitative model description of a new material and processing paradigm.

这个小企业创新研究（SBIR）第一阶段项目的更广泛的影响/商业潜力是，它将为金属制造业提供大块金属玻璃（BMG）板。BMG从根本上不同于晶体金属，并且对晶体金属有利，因为它们比大多数晶体金属更坚固，但同时可以像塑料一样成形。BMG工业化的关键是提供一种实用的原材料，如BMG板材，制造商可以利用BMG独特的加工性能，通过热塑性成型（TPF）方法以最高的精度和轻松的方式制造复杂的形状。所提出的研究的成功结果将使制造商能够更广泛和有效地利用BMG，因为BMG片材将弥合当前昂贵的、有限几何变化的定制BMG部件与未来可负担得起的、标准化BMG原料材料之间的差距。总体而言，拟议的工作将奠定一个关键的基础，使更广泛的商业应用BMG，如在生物医学，纳米压印，电子外壳，国防，航空航天，或汽车，并打开了一个机会，美国制造业是在这个新的制造模式的中心。我们希望我们的研究结果能够更好地理解基于TPF的BMG工艺。特别是对于基于TPF的片材制造，所提出的工作将揭示工艺稳定性以及稳定性如何受到工艺参数的影响。拟议的研究还将确定基于TPF的处理对BMG的机械性能的影响，并将有助于确定合适的BMG类型的辊拉伸。同时，我们的研究将为BMG板材的商业可行性提供详细的见解。考虑到加工时间、工艺耐用性和可重复性、尺寸精度、表面光洁度、资本投资和材料成本，将对工艺可行性进行评价。确定加工参数和工艺要求，例如在板厚度变化中量化的高稳定性所需的温度梯度和变形条件，将为设计和实现商业上可行的辊-拉伸工艺和设备奠定基础。此外，所提出的工作也将提高辊拉伸的理论理解，奠定了一个可预测的和定量的模型描述的新材料和加工范例的基础。