ZHANG Hongxue XU Zhichao CHEN Guoliang University of Science and Technology Beijing
,
Beijing
,
China Professor
,
Faculty of Superalloy
,
University of Science and Technology Beijing
,
Beijing
,
China
金属学报(英文版)
The relative ratio of fatigue resistance to creep resistance of materials varies with test temper- ature.As the temperature decreases,the creep resistance,since it is a thermal activation pro- cess,becomes relatively larger than fatigue resistance.Therefore the fatigue damage becomes predominant,and...
关键词:
creep fracture
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null
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null
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侯介山
,
张玉龙
,
郭建亭
,
冀
,
光
,
周兰章
,
叶恒强
金属学报
研究了铸造镍基高温合金K44在850---900℃, 225---380 MPa的高温拉伸蠕变行为.结果表明, 实验合金蠕变曲线具有较短的初始阶段和较长的加速阶段, 加速阶段较长是由于筏形化的r’粒子和位错相互作用促成的. 加速蠕变为应变软化阶段时, 可以由关系式来描述. 蠕变断裂数据遵守Monkm...
关键词:
镍基高温合金
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high temperature creep
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creep fracture
