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RIA: Experimental Investigation of Brittle to Ductile Transition in Cleavage Fracture

RIA: Experimental Investigation of Brittle to Ductile Transition in Cleavage Fracture
RIA：解理断裂中脆性到延性转变的实验研究
批准号：
9209309
负责人：
K. Jimmy Hsia
金额：
$11.0万
依托单位：
University of Illinois at Urbana-Champaign
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1992
资助国家：
美国
项目状态：
已结题
起止时间：
1992-09-01 至 1996-08-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9209309&HistoricalAwards=false
关键词：
RIAExperimentalInvestigationBrittleDuctile

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英文摘要
The purpose of the research to be performed on this RIA award is to provide information on fundamental mechanisms that manifest during the brittle-to-ductile transition (BDT) process using a novel experimental technique. The issues to be addressed are: (1) whether BDT is controlled by crack tip dislocation nucleation or dislocation mobility; (2) what are the critical crack tip dislocation configurations that result in BDT; (3) what is the strain rate sensitivity of the BDT; and (4) what are the effects of impurities on the BDT.
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