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Effects of High Pressure on the Kinetics of Grain-Growth and Dislocation Recovery in Olivine and Modified Spinel

Effects of High Pressure on the Kinetics of Grain-Growth and Dislocation Recovery in Olivine and Modified Spinel
高压对橄榄石和改性尖晶石晶粒长大和位错恢复动力学的影响
批准号：
9017811
负责人：
Shun-ichiro Karato
金额：
$11.1万
依托单位：
University of Minnesota-Twin Cities
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1991
资助国家：
美国
项目状态：
已结题
起止时间：
1991-05-01 至 1993-10-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017811&HistoricalAwards=false
关键词：
EffectsPressureKineticsGrainGrowth

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英文摘要
The goal of this project is to understand the effects of high pressure on grain-growth in fine-grained olivine and B-phase aggregates and on dislocation recovery in olivine by the static annealing at high temperatures using the multiple anvil high pressure apparatus. This study will yield the first data set on the kinetics of grain-growth and dislocation recovery at very high pressure under well-controlled chemical environments. The results have important applications in a wide range of geological problems, including the evaluation of annealing effects in paleopiezometers, the evaluation of the effects of transformation superplasticity, and the creep mechanisms and the mechanisms of dynamic recrystallization in these minerals.
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  • 项目类别：
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