细观非均质性对镍基单晶双相合金塑性行为的影响

稀有金属材料与工程, 2007, 36(8): 1331-1335.

细观非均质性对镍基单晶双相合金塑性行为的影响

郭运强 ^1, , 张克实 ^2, , 耿小亮 ^3, , 刘芹 ^4,

1.西北工业大学,陕西,西安,710072

2.广西大学,广西,南宁,530004

3.西北工业大学,陕西,西安,710072

4.西北工业大学,陕西,西安,710072

基金项目: 国家自然科学基金(10472092;10662001) 航空基础科学基金(04C53027)

关键词：晶体塑性理论 , 镍基双相合金 , 强化相 , 细观非均质性

Influence of Heterogeneous Microstructure on the Plastic Behavior of Single Crystal Dual Phase Ni-base Superalloy

建立了考虑背应力演化和损伤演化的晶体塑性模型,利用所建立的晶体塑性模型研究了应变速率对镍基单晶合金基体相、强化相的影响.结果表明,镍基单晶基体相和强化相均表现出明显的率相关性.单晶双相合金的细观非均质性导致非均匀的微观应力和微观塑性滑移.塑性滑移变形首先发源于基体相.微观应力和塑性滑移的非均匀性可能是材料微观损伤积累和孔洞形核的根源.

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材料期刊网

细观非均质性对镍基单晶双相合金塑性行为的影响

Influence of Heterogeneous Microstructure on the Plastic Behavior of Single Crystal Dual Phase Ni-base Superalloy

参考文献