High temperature cyclic deformation and fatigue life prediction for dissimilar friction welding of superalloy

高温合金异种摩擦焊高温循环变形及疲劳寿命预测

• 批准号: 21760069
• 负责人: SAKAGUCHI Motoki
• 金额: $ 2.83万
• 依托单位: Nagaoka University of Technology
• 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: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760069/
• 关键词: 超合金; 摩擦圧接; 異材継手; 疲労; 寿命予測

The high temperature fatigue strengths and cyclic deformation behavior of the dissimilar friction welded superalloys joint between the cast polycrystalline Mar-M247 and the forged IN718 alloys were investigated under low cycle and thermo-mechanical fatigue loadings, in comparison with those of the base metals. The experiments showed that the lives of the dissimilar joints were significantly influenced by the test conditions and loading modes. Not only the lives themselves but also the failure positions and mechanisms were sensitive to the loading mode. The fracture behaviors depending on the loading modes and test conditions were discussed, based on the macroscopic elastic follow-up mechanism and the microstructural inhomogeneity in the friction weld joint.

研究了铸造多晶Mar-M247和锻造IN 718合金之间的异种高温合金摩擦焊接头在低周和热机械疲劳载荷下的高温疲劳强度和循环变形行为，并与母材进行了比较。试验结果表明，试验条件和加载方式对接头寿命有显著影响。不仅寿命本身对加载方式敏感，而且破坏位置和破坏机制也对加载方式敏感。基于宏观弹性随动机制和微观组织不均匀性，讨论了摩擦焊接头的断裂行为与加载方式和试验条件的关系。

项目成果

In-situ Estimation of High Temperature Stress Fields Based on Microstructural Analysis of Single Crystal Ni-based super alloys

基于单晶镍基高温合金微观结构分析的高温应力场原位估算

• 发表时间: 2009
• 作者: Motoki SAKAGUCHI;Momoko IKE;Masakazu OKAZAKI
• 通讯作者: Masakazu OKAZAKI

EARLY GROWTH OF SMALL CRACKS IN HEAT RESISTANT ALLOYS UNDER CREEP-FATIGUE CONDITION.

蠕变疲劳条件下耐热合金中小裂纹的早期生长。

• 发表时间: 2006
• 期刊: International Conference & Exhibition on Pressure Vessels and Piping (OPE 2006-CHENNAI). Proc.OPE2006 B5-18(CD ROM)
• 作者: M.Okazaki1;M.Sakaguchi;Y.Yamazaki
• 通讯作者: Y.Yamazaki

Fatigue Crack Propagation Behavior Relevant to Micrstructural Inhomogeneity in A Friction Stir Weldment

搅拌摩擦焊件中与微观结构不均匀性相关的疲劳裂纹扩展行为

• 发表时间: 2010
• 期刊: Journal of Solid Mechanics and Materials Engineering
• 作者: Tran Hung Tra;Masahiro Seino;Motoki Sakaguchi;Masakazu Okazaki
• 通讯作者: Masakazu Okazaki

Fatigue Crack Propagation Behavior Relevant toe Micrstructural Inhomogeneity in A Friction Stir Weldment

搅拌摩擦焊件中与趾部微观结构不均匀性相关的疲劳裂纹扩展行为

• 发表时间: 2010
• 期刊: Journal of Solid Mechanics and Materials Engineering Vol.4, No.6
• 作者: Tran Hung Tra;Masahiro SEINO;Motoki SAKAGUCHI;Masakazu OKAZAKI
• 通讯作者: Masakazu OKAZAKI

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