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NiAl-28Cr-5.5Mo-0.5Hf-0.012P合金的蠕变性能研究
Creep Behavior for NiAI-28Cr-5.5Mo-0.5Hf-0.012P Alloy at High Temperature
查看参考文献7篇
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文摘
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研究了热等静压态NiAl-28Cr-5．5Mo-0.5Hf-0．012P合金的高温蠕变行为。结果表明：实验合金具有较短的减速蠕变阶段和相当长的稳态蠕变阶段以及很高的蠕变应变；在研究的实验条件范围内，合金的蠕变变形机制为低温高应力下的位错粘滞滑移控制和高温低应力下的位错攀移控制；蠕变后合金的显微组织变化不大，表明蠕变断裂受孔洞及裂纹的形成和扩展所控制，而且蠕变断裂行为符合修正后的Monkman-Grant规律：Intf＋0.775lnε=1.104。 |
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其他语种文摘
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The Microstructure and creep behavior for NiA1-28Cr-5.5Mo-0.5Hf-0. 012P alloy at high temperature were investigated. The results reveal that the high temperature creep behavior of NiA1-28Cr-5.5Mo-0.5Hf-0. 012P alloy is characterized by transient primary creep and dominant steady-state creep as well as high creep strain. The creep mechanisms are dislocation glide at lower testing temperatures in higher stress levels and dislocation climb at higher temperatures in lower stress levels. The microstructure has no change, indicating that the creep fracture is controlled by the formation and propagation of cavities and cracks. Tl,e creep fracture behavior obeys Monkman-Grant relationship ：Intf＋0. 775Inε =1.104. |
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来源
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稀有金属
,2006,30(3):305-309 【核心库】
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关键词
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金属间化合物
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NiAl基合金
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蠕变
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地址
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1.
湖南科技大学机电工程学院, 湖南, 湘潭, 411201
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中国科学院金属研究所, 辽宁, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0258-7076 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金重点项目
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国家863计划
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文献收藏号
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CSCD:2455955
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参考文献 共
7
共1页
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1.
Cui C Y. High temperature embrittlement of NiAl alloy induced by hot isostatic pressing(HIPing).
Scr Mater,2001,44:2437
|
CSCD被引
8
次
|
|
|
|
|
2.
Guo J T. interface angd mechanical properties of DS NiAl/Cr(Mo Hf)composite.
Intermetallics,2001,9:287
|
CSCD被引
15
次
|
|
|
|
|
3.
Regev M. Multi-scale modeling of polycrystal plasticity:a workshop report.
Mater Sci Eng A,1998,252:6
|
CSCD被引
9
次
|
|
|
|
|
4.
Regev M.
Metall Mater Trans A,2001,32:1335
|
CSCD被引
7
次
|
|
|
|
|
5.
Johnson D R. Processing and mechanical properties of in-situ composites from the NiAl-Cr and the NiAl-(Cr Mo)eutectic systems.
Intermetallics,1995,3:99
|
CSCD被引
57
次
|
|
|
|
|
6.
Dennison J P. X-ray neutron and electron scattering.
Mater Sci Eng,1978,33:35
|
CSCD被引
4
次
|
|
|
|
|
7.
Williams K R. Effects of microstructural instability on the creep and fracture behaviour of ferritic steels.
Mater Sci Eng,1977,28:289
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CSCD被引
1
次
|
|
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