Development of creep damage evaluation method by three-dimensional grain mapping technique using synchrotron radiation

利用同步辐射的三维颗粒映射技术开发蠕变损伤评估方法

• 批准号: 22760078
• 负责人: SHIOZAWA Daiki
• 金额: $ 2.66万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760078/
• 关键词: 機械材料・材料力学; 非破壊検査; 放射光 CT; 材料力学; 疲労; 材料強度; 放射光; CTイメージング; 結晶組織観察; 疲労き裂; 回折

The three dimensional grain mapping technique for polycrystalline material, that is termed X-ray diffraction contrast tomography (DCT) has proposed. In the present study, the measurements of DCT were conducted in SPring-8 and the condition of measurement and data procedure were discussed. Developed technique was applied to aluminum alloy and stainless steel. It was found that the shape and location of grain can be determined by three-dimensional mapping technique using the apparatus in SPring-8, BL19B2 bending beam line. Next, for evaluation of plastic deformation, the internal grain orientation spread of the individual grain was counted. The grain orientation spread is caused by the mosaicity, which related to the change of microstructure. The grain orientation spread increased with increasing in the tension stress in the plastic deformation region and cyclic loading. It is possible to evaluate fatigue damage in microstructure, such as crack initiation and creep damage, by the DCT technique and using the grain orientation spread as one of the fatigue damage parameters

提出了一种多晶材料的三维晶粒成像技术，即X射线衍射衬度层析成像（DCT）技术。本研究在SPring-8上进行了DCT的测量，并对测量条件和数据处理进行了讨论。所开发的技术应用于铝合金和不锈钢。在SPring-8，BL 19 B2弯曲梁生产线上，利用该装置进行三维测绘，可以确定晶粒的形状和位置。接着，为了评价塑性变形，对各个晶粒的内部晶粒取向扩展进行计数。晶粒取向的扩展是由晶粒的镶嵌性引起的，这与微观结构的变化有关。随着塑性变形区拉应力的增加和循环载荷的增加，晶粒取向扩展程度增加。利用离散余弦变换技术，将晶粒取向扩展作为疲劳损伤参量之一，可以从微观结构上评价疲劳损伤，如裂纹萌生和蠕变损伤

项目成果

Observation of crack propagation under torsion fatigue tests by synchrotron radiation μCT imaging

同步辐射μCT成像观察扭转疲劳试验下裂纹扩展

• 发表时间: 2010
• 期刊: Procedia Engineering
• 作者: Daiki Shiozawa Yoshikazu Nakai;Tomonobu Murakami
• 通讯作者: Tomonobu Murakami

結晶3Dマッピング法による塑性ひずみ評価法の開発

使用晶体3D映射法开发塑性应变评估方法

• 发表时间: 2012
• 作者: S.Okada;D.Shiozawa;Y.Neishi;T.Makino;Y.Nakai;塩澤大輝，三浦亮太郎，政田尚也，中井善一
• 通讯作者: 塩澤大輝，三浦亮太郎，政田尚也，中井善一

Evaluation of Plastic Strain by Three-dimensional Grain Mapping Technique Using SPring-8

使用 SPring-8 通过三维晶粒映射技术评估塑性应变

• 发表时间: 2012
• 作者: Daiki Shiozawa;Yoshikazu Nakai;Tomonobu Murakami;塩澤 大輝;塩澤 大輝;塩澤 大輝;塩澤 大輝;三浦亮太郎，松田翔太，塩澤大輝，中井善一;塩澤 大輝;塩澤 大輝;Daiki Shiozawa
• 通讯作者: Daiki Shiozawa

Development of Three-dimensional Grain Mapping Technique in SPring-8

SPring-8中三维颗粒映射技术的发展

• 发表时间: 2011
• 作者: Y. Nakai;D. Shiozawa;Y. Fukuda;Y. Neishi;T. Makino;塩澤 大輝;塩澤大輝;塩澤 大輝;塩澤 大輝;塩澤大輝;Daiki Shiozawa
• 通讯作者: Daiki Shiozawa

放射光μCT及び小型転動疲労試験機を用いた高強度鋼における転動疲労下のき裂進展過程の観察

利用同步辐射μCT和小型滚动接触疲劳试验机观测高强钢滚动接触疲劳裂纹扩展过程

• 发表时间: 2013
• 作者: 佐藤一矢;塩澤大輝，根石豊，牧野泰三，中井善一
• 通讯作者: 塩澤大輝，根石豊，牧野泰三，中井善一