Ductile fracture mechanism in fine-grained magnesium alloys with dispersion of fine particles
细晶粒弥散镁合金的延性断裂机制
基本信息
- 批准号:21760564
- 负责人:
- 金额:$ 2.5万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2010
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The deformed microstructural observations at the beginning of the three-point bending toughness test showed that the microstructure at the head of the crack-tip composed of high-angle grain boundaries changed to that of sub-grain boundaries without any deformation twins. The prevention of twin formation led to an improvement of fracture toughness in magnesium and its alloys, since the deformation twins generally become the crack-propagation site. On the other hand, the dimple formed region showed the formation of not only sub-grain boundaries but also nano-ordered twins. The reason for the nano-ordered twin formation is that the stress to cause the particle cracking and/or interface fracture is much higher than that to form the twins.
三点弯曲韧性试验开始时的变形显微组织观察表明,裂纹尖端头部的显微组织由大角度晶界转变为亚晶界,没有变形孪晶。防止孪晶形成可以提高镁及其合金的断裂韧性,因为变形孪晶通常成为裂纹扩展部位。另一方面,凹坑形成区域不仅显示出亚晶界的形成,而且还显示出纳米级孪晶的形成。纳米有序孪晶形成的原因是导致颗粒破裂和/或界面断裂的应力远高于形成孪晶的应力。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Deformation mechanism in the crack-tip region of fine-grained magnesium alloy
细晶镁合金裂纹尖端区的变形机制
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:H.Somekawa; T.Inoue; A.Singh; T.Mukai
- 通讯作者:T.Mukai
High strength and toughness balances in magnesium alloys by microstructure controls
通过微观结构控制实现镁合金的高强度和韧性平衡
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:染川英俊
- 通讯作者:染川英俊
Ductile fracture mechanism in fine-grained magnesium alloy
细晶镁合金的延性断裂机制
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:H.Somekawa; K.Nakajima; A.Singh; T.Mukai
- 通讯作者:T.Mukai
Ductile fracture mechanism in fine-grained magnesium alloy
细晶镁合金的延性断裂机制
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:1.2
- 作者:H.Somekawa; K.Nakajima; A.Singh; T.Mukai
- 通讯作者:T.Mukai
Fracture mechanism and toughness in fine-and coarse-grained magnesium alloys, Magnesium Technology 2011, TMS2011
细粒和粗粒镁合金的断裂机制和韧性,镁技术 2011,TMS2011
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:H.Somekawa
- 通讯作者:H.Somekawa
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SOMEKAWA Hidetoshi其他文献
SOMEKAWA Hidetoshi的其他文献
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{{ truncateString('SOMEKAWA Hidetoshi', 18)}}的其他基金
High deformability of Mg alloys via dual grain boundary segregation
镁合金通过双晶界偏析实现高变形能力
- 批准号:
19K05068 - 财政年份:2019
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Grain boundary embrittlement and enhancement in fine-grained magnesium alloys
细晶镁合金的晶界脆化与强化
- 批准号:
23760675 - 财政年份:2011
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
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Simultaneous improvement of strength and room-temperature formability of rolled Mg alloy by dynamic recrystallization based microstructural control
基于动态再结晶的微观结构控制同时提高轧制镁合金的强度和室温成形性
- 批准号:
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The role of slip and twinning in bending deformation of HCP metals
滑移和孪生在 HCP 金属弯曲变形中的作用
- 批准号:
22K04672 - 财政年份:2022
- 资助金额:
$ 2.5万 - 项目类别:
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Optimal design of 2D cell type structure of magnesium alloys considering mechanical characteristics induced by deformation twins
考虑变形孪晶力学特性的镁合金二维胞状结构优化设计
- 批准号:
21K03781 - 财政年份:2021
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Optimal design of 2D cell type structure of magnesium alloys considering mechanical characteristics induced by deformation twins
考虑变形孪晶力学特性的镁合金二维胞状结构优化设计
- 批准号:
21K03781 - 财政年份:2021
- 资助金额:
$ 2.5万 - 项目类别:
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