Linked Life Data

21566189

Source:http://linkedlifedata.com/resource/pubmed/id/21566189

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6031
pubmed:dateCreated
2011-5-13
pubmed:abstractText
The development of metal alloys that form glasses at modest cooling rates has stimulated broad scientific and technological interest. However, intervening crystallization of the liquid in even the most robust bulk metallic glass-formers is orders of magnitude faster than in many common polymers and silicate glass-forming liquids. Crystallization limits experimental studies of the undercooled liquid and hampers efforts to plastically process metallic glasses. We have developed a method to rapidly and uniformly heat a metallic glass at rates of 10(6) kelvin per second to temperatures spanning the undercooled liquid region. Liquid properties are subsequently measured on millisecond time scales at previously inaccessible temperatures under near-adiabatic conditions. Rapid thermoplastic forming of the undercooled liquid into complex net shapes is implemented under rheological conditions typically used in molding of plastics. By operating in the millisecond regime, we are able to "beat" the intervening crystallization and successfully process even marginal glass-forming alloys with very limited stability against crystallization that are not processable by conventional heating.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
May
pubmed:issn
1095-9203
pubmed:author
pubmed:issnType
Electronic
pubmed:day
13
pubmed:volume
332
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
828-33
pubmed:year
2011
pubmed:articleTitle
Beating crystallization in glass-forming metals by millisecond heating and processing.
pubmed:affiliation
Keck Laboratory of Engineering, California Institute of Technology, Pasadena, CA 91125, USA. wlj@caltech.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't