Study on the Mechanism of Spark Emissions Observed in Fatigue of Zr-based Bulk Amorphous Alloy in Air

锆基大块非晶合金空气疲劳火花放电机理研究

• 批准号: 22560090
• 负责人: NAKASONE Yuji
• 金额: $ 2.83万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 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-22560090/
• 关键词: 疲労; アモルファス; バルクアモルファス; 金属ガラス; 発光; き裂進展; せん断試験; デジタル画像相関法; シェアリップ

The present study investigates the mechanism of spark emissions from crack peripheries observed during the fatigue fracture process of a bulk amorphous alloy Zr55Al10Ni5Cu30. Shear tests of the alloy were performed by using the double-edge-cracked plate specimens at room temperature in air. The loading rate of the shear tests was 15kN/s. The digital image correlation (DIC) method was used to measure deformation around the crack tips in the shear test specimens. The shear tests showed that specimens were fractured along highly strained areas and spark emissions were observed along such fracture paths. The results alsorevealed that spark emissions may have been induced by friction between mating fracture surfaces, especially shear lip regions.

研究了块体非晶合金Zr55Al10Ni5Cu30在疲劳断裂过程中观察到的裂纹周边的火花发射机制。采用双侧裂纹板试件，在室温空气中进行了该合金的剪切试验。剪切试验的加载速率为15kN/S，用数字图像相关法测量剪切试验试件中裂纹尖端附近的变形。剪切试验表明，试件沿高应变区断裂，并沿断裂路径观察到火花发射。结果还表明，火花发射可能是由配合断口之间的摩擦引起的，尤其是剪切唇区。

项目成果

結晶粘弾性モデルに基づく高クロム鋼溶接部のクリープ解析

基于晶体粘弹性模型的高铬钢焊缝蠕变分析

• 发表时间: 2012
• 期刊: 第17回計算工学講演会CD-ROM論文集
• 作者: 中曽根祐司;岡見篤史;松本明大;中曽根祐司
• 通讯作者: 中曽根祐司

Yuki o Takahashi Current Fusion Standards and Other Related Activities in Japan

Yuki o Takahashi 日本当前的融合标准和其他相关活动

• 发表时间: 2010
• 期刊: Proceedings of PVP2010
• 作者: Mitsuo NOTOMI;Hironao GOMAE;Yuji Nakasone,Kazuyoshi Sato
• 通讯作者: Yuji Nakasone,Kazuyoshi Sato

レーザ･ピーニング処理による改良9Cr-1Mo鋼の残留応力分布とクリープ寿命の変化

激光喷丸处理改性9Cr-1Mo钢残余应力分布及蠕变寿命的变化

• 作者: Hirotaka Tanabe;Keiji Ogawa;Yui Izumi;Takuya Saraie;Motoyuki Nishizawa;Tohru Takamatsu;Heisaburo Nakagawa;中曽根祐司;中曽根祐司;中曽根祐司;中曽根祐司
• 通讯作者: 中曽根祐司

9Cr-1Mo鋼溶接部の微視組織を考慮した2次元異方性クリープ解析

考虑 9Cr-1Mo 钢焊缝微观结构的二维各向异性蠕变分析

• 发表时间: 2012
• 期刊: 日本機械学会第25回計算力学講演会 CD-ROM 論文集
• 作者: 中曽根祐司;岡見篤史;中西紫緒
• 通讯作者: 中西紫緒

Finite Element Polycrystal Plasticity Analysis of Bimodal Structures Considering the Three-stage Hardening Behavior of Constituent Single Crystals Symposium in Memory of Professor Toshio Mura

考虑成分单晶三阶段硬化行为的双峰结构有限元多晶塑性分析 纪念村俊夫教授研讨会

• 发表时间: 2010
• 作者: Hirotaka Tanabe;Keiji Ogawa;Takuya Saraie;Yui Izumi;Mitsuhiro Gotoh;Hideki Hagino;Takuto Yamaguchi;Tohru Takamatsu;Heisaburou Nakagawa;Yuji Nakasone
• 通讯作者: Yuji Nakasone