Understanding of plasticity size-effect governed mechanical response and incomplete die filling in a microscale double-punch molding configuration.

ABSTRACT: Direct replication of microscale patterns onto metal surfaces by compression molding with patterned dies is used to fabricate metal-based structures for microsystem applications. Micron scale plasticity governs both the mechanical molding response and the geometric fidelity of replicated patterns. Microscale molding replication offers a technologically relevant example in which various plasticity size effects manifest themselves and control the effectiveness of the fabrication process. Microscale compression molding of a single-crystal Al specimen was studied by combining experimentation with conventional and strain gradient plasticity finite element simulations. In the single-punch molding configuration, single rectangular punches with different widths and lengths were used. In the double

SUBMITTER: Zhang B 

PROVIDER: S-EPMC8208638 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature