Free standing bulk metallic glass microcomponents: Tooling considerations

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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Free standing bulk metallic glass microcomponents: Tooling considerations. / Byrne, Cormac; Eldrup, Morten Mostgaard; Ohnuma, Masato; Eriksen, Rasmus Solmer.

In: Journal of Materials Processing Technology, Vol. 210, No. 11, 2010, p. 1419-1428.

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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Author

Byrne, Cormac; Eldrup, Morten Mostgaard; Ohnuma, Masato; Eriksen, Rasmus Solmer / Free standing bulk metallic glass microcomponents: Tooling considerations.

In: Journal of Materials Processing Technology, Vol. 210, No. 11, 2010, p. 1419-1428.

Publication: Research - peer-reviewJournal article – Annual report year: 2010

Bibtex

@article{b9e9e45610644863843f72352afbad3e,
title = "Free standing bulk metallic glass microcomponents: Tooling considerations",
keywords = "Materials characterization and modelling, Materials and energy storage, Materialekarakterisering og materialemodellering, Materialer og energilagring",
publisher = "Elsevier S.A.",
author = "Cormac Byrne and Eldrup, {Morten Mostgaard} and Masato Ohnuma and Eriksen, {Rasmus Solmer}",
year = "2010",
doi = "10.1016/j.jmatprotec.2010.03.016",
volume = "210",
number = "11",
pages = "1419--1428",
journal = "Journal of Materials Processing Technology",
issn = "0924-0136",

}

RIS

TY - JOUR

T1 - Free standing bulk metallic glass microcomponents: Tooling considerations

A1 - Byrne,Cormac

A1 - Eldrup,Morten Mostgaard

A1 - Ohnuma,Masato

A1 - Eriksen,Rasmus Solmer

AU - Byrne,Cormac

AU - Eldrup,Morten Mostgaard

AU - Ohnuma,Masato

AU - Eriksen,Rasmus Solmer

PB - Elsevier S.A.

PY - 2010

Y1 - 2010

N2 - Bulk metallic glasses have enormous potential for use in small-scale devices such as MEMS and biomedical components. Thermoplastic forging of free standing components poses challenges unlike those seen when forging crystalline materials. Central to these challenges is the simultaneous advantage/disadvantage that BMGs flow readily into small features and asperities in the dies and molds. Whilst useful for replicating patterned surfaces, this quite often makes non-destructive removal of components quite difficult, with disproportionate extraction forces and specialized tools required to overcome friction and mechanical locking. Several solutions to this extraction problem were explored, including high temperature extraction, lubrication and the use of materials with low coefficients of thermal expansion (CTE) as die/mold materials. We show that the use of appropriately chosen low CTE die materials offers a superior method to remove BMG components from dies/molds at room temperature. The criteria for selecting the appropriate die material, cavity size and extraction temperatures are outlined.

AB - Bulk metallic glasses have enormous potential for use in small-scale devices such as MEMS and biomedical components. Thermoplastic forging of free standing components poses challenges unlike those seen when forging crystalline materials. Central to these challenges is the simultaneous advantage/disadvantage that BMGs flow readily into small features and asperities in the dies and molds. Whilst useful for replicating patterned surfaces, this quite often makes non-destructive removal of components quite difficult, with disproportionate extraction forces and specialized tools required to overcome friction and mechanical locking. Several solutions to this extraction problem were explored, including high temperature extraction, lubrication and the use of materials with low coefficients of thermal expansion (CTE) as die/mold materials. We show that the use of appropriately chosen low CTE die materials offers a superior method to remove BMG components from dies/molds at room temperature. The criteria for selecting the appropriate die material, cavity size and extraction temperatures are outlined.

KW - Materials characterization and modelling

KW - Materials and energy storage

KW - Materialekarakterisering og materialemodellering

KW - Materialer og energilagring

U2 - 10.1016/j.jmatprotec.2010.03.016

DO - 10.1016/j.jmatprotec.2010.03.016

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

SN - 0924-0136

IS - 11

VL - 210

SP - 1419

EP - 1428

ER -