Finite element analysis on the micro-forming process of Zr-based bulk metallic glass

Bulk metallic glasses have exhibited superior microforming ability, and can be used to make high strength microparts. The micro-forming process of Zr-based amorphous alloy in micro silicon molds with the modulus 0.1mm, 20 teeth and 300μm in depth is simulated using the DEFORM 3D, a finite element simulation software. The filling process and the impact of billet size on forming load are analyzed. The results indicate that the numerical simulations match well with the experimental load-strain curves at low strain rates. The micro-forming process is optimized, and then a micro spur gear with good dimensional accuracy is obtained using the improved process. Thus, the finite element analyses on the micro-forming process of BMG are helpful for process optimization and microparts fabrication.

[1]  R. Cahn,et al.  Materials science and engineering , 2023, Nature.

[2]  William L. Johnson,et al.  Bulk metallic glasses — a new engineering material , 1996 .

[3]  Lallit Anand,et al.  A constitutive theory for the mechanical response of amorphous metals at high temperatures spanning the glass transition temperature: Application to microscale thermoplastic forming , 2008 .

[4]  J. Schroers.  The superplastic forming of bulk metallic glasses , 2005 .

[5]  Young Won Chang,et al.  Boss formability of a Zr-based bulk metallic glass , 2009 .

[6]  Zhihao Zhang,et al.  A numerical simulation of super-plastic die forging process for Zr-based bulk metallic glass spur gear , 2006 .

[7]  J. Schroers,et al.  Nanomoulding with amorphous metals , 2009, Nature.

[8]  Barbara T. Fichman.  Annual Energy Review 2009 , 2010 .

[9]  Alireza Fallahi,et al.  Dynamic scheduling in flexible job shop systems by considering simultaneously efficiency and stability , 2010 .

[10]  Tony L. Schmitz,et al.  Closed channel fabrication using micromolding of metallic glass , 2009 .

[11]  J. Schroers.  Processing of Bulk Metallic Glass , 2010, Advanced materials.

[12]  Mostafa Zandieh,et al.  Integrating simulation and genetic algorithm to schedule a dynamic flexible job shop , 2009, J. Intell. Manuf..

[13]  John W. Sutherland,et al.  A new approach to scheduling in manufacturing for power consumption and carbon footprint reduction , 2011 .

[14]  Tao Zhang,et al.  Preparation of Bulky Amorphous Zr–Al–Co–Ni–Cu Alloys by Copper Mold Casting and Their Thermal and Mechanical Properties , 1995 .

[15]  Lawrence E. Whitman,et al.  Data collection framework on energy consumption in manufacturing , 2006 .

[16]  Saeed Mansour,et al.  Dynamic flexible job shop scheduling with alternative process plans: an agent-based approach , 2011 .

[17]  Yasunori Saotome,et al.  Superplastic backward microextrusion of microparts for micro-electro-mechanical systems , 2001 .

[18]  He Yan,et al.  A bi-objective model for job-shop scheduling problem to minimize both energy consumption and makespan , 2005 .