Výsledky vyhledávání - "Bernard Q. Li"

Ultrafine- and uniform-grained biodegradable Zn-0.5Mn alloy: Grain refinement mechanism, corrosion behavior, and biocompatibility in vivo

Autor: Zhenlun Song, Long Deng, Lijing Yang, Pushan Guo, Kailynn Cho, Wensheng Sun, Tiantian Ren, Bernard Q. Li, Qingke Zhang, Xinglong Zhu

Publikováno v: Materials scienceengineering. C, Materials for biological applications. 118

An ultrafine- and uniform-grained Zn–0.5Mn alloy (D3 alloy, stands for deformation rate of 99.5%) is fabricated via multi-pass drawing. The alloy features excellent ductility and elongation properties (up to 245.0% ± 9.0% at room temperature). Zn-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::032d90f90fa64814f509e56698939a63
https://pubmed.ncbi.nlm.nih.gov/33254997

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Intrinsic toughness of the bulk-metallic glass Vitreloy 105 measured using micro-cantilever beams

Autor: Jia Liu, Antonio J. Ramirez, Daniel Sorensen, Jesse Pischlar, Bernard Q. Li, Hui Jin, Eric Hintsala, Douglas Stauffer, Robert O. Ritchie, Jason C. Myers, Daniel Kiener, Joseph Stevick

Publikováno v: Acta Materialia

Bulk-metallic glasses (BMGs) are a class of structural materials with many attractive processing features such as the ability to be processed into parts with fine features, dimensional precision, and repeatability; however, their fracture behavior is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bdd467a6fd355469edad29b6562982f

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Investigation of weld cracking in Nd:yttrium–aluminum–garnet keyhole spot welding of materials used in optoelectronic packaging

Autor: Bernard Q. Li, Geoff J. Shannon

Publikováno v: Journal of Laser Applications. 16:73-78

The welding of a problematic optical device weld joint between dissimilar materials is investigated in depth. The original material combination of cold rolled steel 1010 with 6 μm of gold coating and 304 L produced consistent weld cracking. The CRS1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e5e30d4946c8a751a0747f80ec391a7
https://doi.org/10.2351/1.1710882

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Observation of Dislocation Multiple Cutting of the Semicoherent Precipitate in Al-Cu-Mg-Ag Alloy

Autor: Bernard Q. Li, Franklin E. Wawner

Publikováno v: Materials Science Forum. :1359-1364

The interaction between dislocations and semicoherent precipitates (the Ω phase) is discussed in this study. The investigation shows that the semicoherent precipitate is cut by dislocations during deformation. Conventional TEM and HRTEM observations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb99842cd2aee0a0c10ecc5a3546a6f4
https://doi.org/10.4028/www.scientific.net/msf.331-337.1359

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Observation of Dislocation Cutting Ω Phase and its Strengthening Mechanism in an Al-Cu-Mg-Ag Alloy

Autor: Bernard Q. Li, Franklin E. Wawner

Publikováno v: Microscopy and Microanalysis. 3:139-145

This investigation presents the interaction of dislocations and semicoherent precipitates (Ω phase) in an Al-Cu-Mg-Ag alloy. The study shows that the semicoherent precipitate is cut by dislocations during deformation. Conventional transmission elect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::298ce2c6538ee9800838e810a4068542
https://doi.org/10.1017/s1431927697970112

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Fatigue Behavior of Pt-20%Ir Coils Used as Implanted Electrodes in Medical Devices

Autor: Haitao Zhang, Bernard Q. Li

Publikováno v: Volume 9: Mechanics of Solids, Structures and Fluids.

Pt-20%Ir coils were used in medical devices as conductors for the leads that transfer the electrical signal from an implanted stimulator to the area of the body (e.g., brain or nerves) to be stimulated. In this study, the fatigue behavior and failure

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b2d06303b9bfccf5187789143c972c6
https://doi.org/10.1115/imece2013-63779

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Fatigue Behavior and Microstructure of Pt-20Ir Wire as Lead Conductor in Implantable Medical Device

Autor: Haitao Zhang, Bernard Q. Li, Kailynn Cho

Publikováno v: Volume 8: Mechanics of Solids, Structures and Fluids.

Pt-20Ir cold draw wire has been used as lead conductor in implantable medical devices. The lead is a medical device to transfer the electrical signal from a implanted stimulator to the body area for stimulating such as brain and neurological nerves.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29199316f02384a6c3d0c3670033db8a
https://doi.org/10.1115/imece2012-87976

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