The Role of Microstructure in Mixed Mode Fracture
The Role of Microstructure in Mixed Mode Fracture
批准号:
8813972
负责人:
John Hirth
金额:
$0.0万
依托单位国家:
美国
项目类别:
Continuing grant
财政年份:
1989
资助国家:
美国
项目状态:
已结题
起止时间:
1989-04-01 至 1992-09-30
中文摘要
本研究的目的是研究含有两种析出物的铝合金的复合型断裂。通过平面应变和弯曲试验考察了拉伸和压缩时的变形行为。对不同颗粒尺寸和颗粒间距的试件,观察了剪切局部化的形貌和程度、空洞的形核和长大以及断口形貌。表面粗糙度是确定的,并与表面塑性不稳定性有关。对两相界面附近的位错-裂纹尖端构型进行了理论计算。
英文摘要
The objective of this research program is to study mixed-mode fracture of aluminum alloys containing two types of precipitates. Deformation behavior is examined in tension and compression, using plane strain and bend tests. The topography and extent of shear localization, void nucleation and growth, and fractography are followed for specimens with different particle sizes and particle spacings. Surface roughness is determined and related to surface plastic instability. Theoretical calculations are carried out for dislocation-crack tip configurations near a two-phase interface.
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会议论文
Fracture and Fatigue of Alloys Under Mixed-Mode Loading
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批准号:9420511
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1995
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负责人:John Hirth
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依托单位:
Mechanism of Mixed Mode I/III Fracture of Alloys
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批准号:9119342
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1992
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负责人:John Hirth
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依托单位:
Plastic Instability and Fracture in Steels (Materials Research)
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批准号:8896197
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项目类别:Continuing Grant
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资助金额:$5.67万
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财政年份:1988
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负责人:John Hirth
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依托单位:
Group Travel to Yamada Conference on Dislocations in Solids,in Tokyo, Japan on August 27-31, 1984. (Materials Research)
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批准号:8318624
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项目类别:Standard Grant
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资助金额:$1.56万
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财政年份:1984
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负责人:John Hirth
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依托单位:
Plastic Instability and Fracture in Steels (Materials Research)
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批准号:8311620
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1984
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负责人:John Hirth
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依托单位:
Ductile Fracture and Hydrogen Embrittlement
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批准号:7815735
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项目类别:Continuing Grant
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资助金额:$36.03万
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财政年份:1979
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负责人:John Hirth
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依托单位:
Crack-Tip Region Problems in Fracture
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批准号:7421243
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:1974
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负责人:John Hirth
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依托单位:
国内基金
海外基金
新型微针气体探测器LM(Leak Microstructure)的研究
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批准号:10775151
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项目类别:面上项目
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资助金额:38.0万元
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批准年份:2007
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负责人:周莉
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依托单位: