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Development of Structural Design Method for Twisted Wires Suspension 双绞线悬架结构设计方法的发展
4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-d2022012
Haruki Kumamoto, Kenji Saka, Kazunari Yoshida, Hiroaki Kubota
{"title":"Development of Structural Design Method for Twisted Wires Suspension","authors":"Haruki Kumamoto, Kenji Saka, Kazunari Yoshida, Hiroaki Kubota","doi":"10.2320/matertrans.mt-d2022012","DOIUrl":"https://doi.org/10.2320/matertrans.mt-d2022012","url":null,"abstract":"Copper alloy suspension wires are used in the optical pickups and image stabilization mechanisms of mobile cameras. The durability of suspension wires used in mobile cameras is greatly affected by the increase in the weight of the lens assembly as makers improve the image quality of the camera. Therefore, the durability of the wire needs improvement. In this study, the stress reduction effect of twisted suspension wires was investigated using finite element method (FEM) analysis. In addition, a practical equation was obtained to facilitate the structural design. From this study, the following conclusions were obtained. In contrast to the conventional single-wire structure, the twisted wire structure enables a significant reduction in the stress generated while maintaining the stiffness. A simple formula that approximates the results of many FEM analyses was developed to enable rapid product design.","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135671273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Severe Plastic Deformation of High-Entropy Alloys 高熵合金的严重塑性变形
IF 1.2 4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-mf2022050
W. Skrotzki, R. Chulist
{"title":"Severe Plastic Deformation of High-Entropy Alloys","authors":"W. Skrotzki, R. Chulist","doi":"10.2320/matertrans.mt-mf2022050","DOIUrl":"https://doi.org/10.2320/matertrans.mt-mf2022050","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42559920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Severe Plastic Deformation by Fast Forging to Easy Produce Hydride from Bulk Mg-Based Alloys 快速锻造使大块mg基合金发生剧烈塑性变形，容易产生氢化物
IF 1.2 4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-mf2022049
D. Fruchart, N. Skryabina, P. de Rango, Marjan Fouladvind, V. Aptukov
{"title":"Severe Plastic Deformation by Fast Forging to Easy Produce Hydride from Bulk Mg-Based Alloys","authors":"D. Fruchart, N. Skryabina, P. de Rango, Marjan Fouladvind, V. Aptukov","doi":"10.2320/matertrans.mt-mf2022049","DOIUrl":"https://doi.org/10.2320/matertrans.mt-mf2022049","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44044208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coercivity Enhancement of Sintered Nd–Fe–B Magnets by Intergranular Adding Micro-Structured Dy–Nd–Pr–Al–Cu Powder 晶间添加微结构Dy-Nd-Pr-Al-Cu粉末增强Nd-Fe-B烧结磁体矫顽力
IF 1.2 4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-m2023023
P. Thanh, N. Ngoc, K. X. Hau, N. H. Yen, T. V. Anh, N. H. Dan
{"title":"Coercivity Enhancement of Sintered Nd–Fe–B Magnets by Intergranular Adding Micro-Structured Dy–Nd–Pr–Al–Cu Powder","authors":"P. Thanh, N. Ngoc, K. X. Hau, N. H. Yen, T. V. Anh, N. H. Dan","doi":"10.2320/matertrans.mt-m2023023","DOIUrl":"https://doi.org/10.2320/matertrans.mt-m2023023","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41524999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Progress on SPD Processes Empowered by Hydrostatic Pressure 静水压力驱动SPD过程的最新进展
IF 1.2 4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-mf2022007
M. Zohrevand, Ali Reza Rezaei, M. Sabour, Erfan Taherkhani, G. Faraji
{"title":"Recent Progress on SPD Processes Empowered by Hydrostatic Pressure","authors":"M. Zohrevand, Ali Reza Rezaei, M. Sabour, Erfan Taherkhani, G. Faraji","doi":"10.2320/matertrans.mt-mf2022007","DOIUrl":"https://doi.org/10.2320/matertrans.mt-mf2022007","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69119657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alloy Design and Solidification Microstructure Analysis in Fe–P–C–Ag Immiscible Metallic Glass Fe-P-C-Ag非混相金属玻璃合金设计及凝固组织分析
4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-y2023001
Takeshi Nagase, Tomoyuki Terai, Mitsuaki Matsumuro, Mamoru Takemura
{"title":"Alloy Design and Solidification Microstructure Analysis in Fe–P–C–Ag Immiscible Metallic Glass","authors":"Takeshi Nagase, Tomoyuki Terai, Mitsuaki Matsumuro, Mamoru Takemura","doi":"10.2320/matertrans.mt-y2023001","DOIUrl":"https://doi.org/10.2320/matertrans.mt-y2023001","url":null,"abstract":"Solidification microstructure in Fe-based Fe–X-based metallic glasses (X = Cu, Ag, Au, Pd, Pt, Rh, Ir, Ru, Os, Re, Hg) (X is a noble metallic element) with liquid phase separation (LPS) was categorized. Only Fe–Cu-based and Fe–Ag-based metallic glasses with liquid phase separation were reported among Fe–X-based alloys. Fe–P–C–Ag immiscible metallic glasses which showed liquid-phase separation were designed using the alloy parameters of mixing enthalpy, the ground state diagrams constructed by the Materials Project, and Calculation of Phase Diagrams (CALPHAD). Macroscopically separated ribbons composed of FCC-Ag entangled ribbons and Fe–P–C metallic glass ribbons were obtained by a melt-spinning method. The formation mechanism of the macroscopically separated ribbons in Fe–P–C–Ag immiscible metallic glasses is described with LPS behavior and melt-spinning process in this study.","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135872102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Grain Boundary Characters on Precipitation Behavior and Local Deformation Behavior in Al–Mg–Si Alloy Al-Mg-Si合金晶界特征对析出行为和局部变形行为的影响
4区 材料科学
Materials Transactions Pub Date : 2023-08-01 DOI: 10.2320/matertrans.mt-m2022217
Takuya Hashimoto, Ken-ichi Ikeda, Seiji Miura
{"title":"Effect of Grain Boundary Characters on Precipitation Behavior and Local Deformation Behavior in Al–Mg–Si Alloy","authors":"Takuya Hashimoto, Ken-ichi Ikeda, Seiji Miura","doi":"10.2320/matertrans.mt-m2022217","DOIUrl":"https://doi.org/10.2320/matertrans.mt-m2022217","url":null,"abstract":"Nanoindentation tests were conducted near the grain boundary (GB) of the Al–Mg–Si alloy, and the influence of GB character on the aging precipitation behavior and the mechanical properties was confirmed. After obtaining the GB characters by electron back scattered diffraction (EBSD) analysis and nanoindentation tests were carried out on under-aged, peak-aged, and over-aged samples. And then, the indentation areas were observed by back scattered electrons imaging (BSE) in order to identify indentation positions to the GB. In this study, for the GB character, focusing on the rotation angle, the high-angle GB (HAGB) and the low-angle GB (LAGB) were selected. In addition, coincidence site lattice GBs (CSL) were selected as the special GB. In the 180°C under-aged sample, the nano-hardness near GB is higher than that far from GB, while 180°C peak-aged and 250°C aged samples, the nano-hardness is lower than that far from GB. Then the amount of change in hardness of HAGB was larger than that of the LAGB. This suggests that the GB character affects the aging precipitation behavior and mechanical properties.","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135872424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling of Yield Surfaces for A5052 Aluminum Alloy Sheets with Different Tempers by Simplified Identification Method and Its Experimental Validation 不同回火状态A5052铝合金薄板屈服面简化识别建模及实验验证
4区 材料科学
Materials Transactions Pub Date : 2023-07-01 DOI: 10.2320/matertrans.mt-l2023002
Yuta Saito, Hideo Takizawa
{"title":"Modeling of Yield Surfaces for A5052 Aluminum Alloy Sheets with Different Tempers by Simplified Identification Method and Its Experimental Validation","authors":"Yuta Saito, Hideo Takizawa","doi":"10.2320/matertrans.mt-l2023002","DOIUrl":"https://doi.org/10.2320/matertrans.mt-l2023002","url":null,"abstract":"Yield surfaces of A5052 aluminum alloy sheets with different tempers are modeled by the simplified identification method using the circumscribing polygon. In this method, a polygon circumscribing the equal plastic work contour is determined by uniaxial tensile, equal biaxial tensile and plane strain tensile tests. Anisotropic yield surfaces of A5052 aluminum alloy sheet are modeled by Yld2000-2d (Barlat et al., 2003) and Yld2004-18p (Barlat et al., 2005) yield functions. Both yield functions can express the inscribed curves of the polygons. The modeled yield surfaces of A5052-O agree with the stress points of the equal plastic work contours measured by the reliable bi-axial tensile tests. The proposed method to identify the yield function is effective for aluminum sheet metal. On the other hand, the two identified yield functions show different in-plane plastic anisotropy in the tension-compression combined stress state. To examine the suitability of identified models, the experiments and numerical analyses of the deep drawing tests are carried out. Comparing the experimental and analyzed results, the predicted ear height of drawn cup using the Yld2004-18p yield function agree with experimental results qualitatively. But the prediction of the ear using the Yld2000-2d cannot express the tendency of the experimental one.","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135209917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanoscale Analysis of Solute Distribution in Ultrahigh-Strength Aluminum Alloys 超高强度铝合金中溶质分布的纳米尺度分析
4区 材料科学
Materials Transactions Pub Date : 2023-07-01 DOI: 10.2320/matertrans.mt-mf2022032
Equo Kobayashi, Masato Ohnuma, Shigeru Kuramoto, Junya Kobayashi, Goroh Itoh
{"title":"Nanoscale Analysis of Solute Distribution in Ultrahigh-Strength Aluminum Alloys","authors":"Equo Kobayashi, Masato Ohnuma, Shigeru Kuramoto, Junya Kobayashi, Goroh Itoh","doi":"10.2320/matertrans.mt-mf2022032","DOIUrl":"https://doi.org/10.2320/matertrans.mt-mf2022032","url":null,"abstract":"Nanoscale microstructural analysis and evaluation of mechanical properties were conducted on severely cold-rolled aluminum alloys. In order to examine the effect of alloying elements on microstructure and mechanical properties, Al–Cu–Mg, Al–Mg–Si and Al–Zn–Mg–Cu alloy sheets were prepared for systematic investigation. The SAXS and SANS were used to analyze the nanoscale microstructures in solution-treated and rolled samples of Al–Cu–Mg and Al–Zn–Mg–Cu alloys, and the results quantitatively revealed that nanoscale clusters are formed regardless of with or without rolling. HR-TEM, HAADF-STEM, thermal analysis, hardness and electrical conductivity measurements also suggested that the clusters are formed in cold-rolled samples. Mechanical property evaluations showed that strength generally increased, and ductility decreased with increasing cold-rolling reduction. The strength tended to increase with increasing solute content regardless of the alloy system.","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135209918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
R-Phase Transformation in Ti50−xNi47+xFe3 Shape Memory Alloys Ti50−xNi47+xFe3形状记忆合金的r相变
IF 1.2 4区 材料科学
Materials Transactions Pub Date : 2023-07-01 DOI: 10.2320/matertrans.mt-m2023003
Y. Kimura, Xiao Xu, K. Han, K. Niitsu, T. Omori, R. Umetsu, R. Kainuma
{"title":"R-Phase Transformation in Ti50−xNi47+xFe3 Shape Memory Alloys","authors":"Y. Kimura, Xiao Xu, K. Han, K. Niitsu, T. Omori, R. Umetsu, R. Kainuma","doi":"10.2320/matertrans.mt-m2023003","DOIUrl":"https://doi.org/10.2320/matertrans.mt-m2023003","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47367522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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