Volcanic tuffs extracted from the quarries of Bayburt province in Turkey are of three different types locally identified as White, Yellow, and Green Bayburt stone, deriving from their colours. In t...
{"title":"Determination of Some Physical-Mechanical Properties of Volcanic Tuff Using Non-Destructive Method","authors":"CanÖmer","doi":"10.1680/JEMMR.21.00056","DOIUrl":"https://doi.org/10.1680/JEMMR.21.00056","url":null,"abstract":"Volcanic tuffs extracted from the quarries of Bayburt province in Turkey are of three different types locally identified as White, Yellow, and Green Bayburt stone, deriving from their colours. In t...","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"11 1","pages":"1-9"},"PeriodicalIF":2.2,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49108765","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}
In this study, Mg65Ni25Y5B5 metallic glass by melt spinning technique was examined in terms of its electrochemical hydrogen storage characteristic, mechanical and thermal behaviors. The XRD and SEM results indicated that the alloy ribbon has a fully amorphous structure. The thermal behavior of the alloy ribbon was determined using flash differential scanning calorimetry (Flash DSC). According to Flash DSC results, the amorphous alloy ribbon exhibited distinct glass transition temperature (T g ) and wide supercooled liquid region (ΔT x = T x − T g ) before crystallization. Accordingly, T g and ΔT x are 195 °C and 63 °C, respectively. Mechanical behavior of the Mg-based alloy at room temperature was determined by means of Vickers microhardness (HV) tester. The microhardness value of the alloy ribbon was measured 336,8 HV. The discharge capacity of the Mg65Ni25Y5B5 alloy reached 313 mAhg−1. The cycle stability revealed that the alloy ribbon protected at least 76.7% of its initial discharge capacity at 12th charge-discharge cycle.
研究了熔融纺丝法制备的Mg65Ni25Y5B5金属玻璃的电化学储氢特性、力学性能和热性能。XRD和SEM结果表明，合金带具有完全非晶结构。采用flash差示扫描量热法(flash DSC)测定了合金带的热行为。根据Flash DSC结果，非晶合金带在结晶前表现出明显的玻璃化转变温度(T g)和较宽的过冷液区(ΔT x = T x−T g)。因此，T g和ΔT x分别为195℃和63℃。采用维氏显微硬度计(HV)测定了镁基合金的室温力学行为。合金带的显微硬度值为336,8 HV。Mg65Ni25Y5B5合金的放电容量达到313 mAhg−1。循环稳定性分析表明，在第12次充放电循环时，合金带至少保护了76.7%的初始放电容量。
{"title":"Electrochemical hydrogen storage, mechanical and thermal behaviors of novel Mg-based alloy","authors":"Celal Kursun","doi":"10.1680/jemmr.22.00044","DOIUrl":"https://doi.org/10.1680/jemmr.22.00044","url":null,"abstract":"In this study, Mg65Ni25Y5B5 metallic glass by melt spinning technique was examined in terms of its electrochemical hydrogen storage characteristic, mechanical and thermal behaviors. The XRD and SEM results indicated that the alloy ribbon has a fully amorphous structure. The thermal behavior of the alloy ribbon was determined using flash differential scanning calorimetry (Flash DSC). According to Flash DSC results, the amorphous alloy ribbon exhibited distinct glass transition temperature (T g ) and wide supercooled liquid region (ΔT x = T x − T g ) before crystallization. Accordingly, T g and ΔT x are 195 °C and 63 °C, respectively. Mechanical behavior of the Mg-based alloy at room temperature was determined by means of Vickers microhardness (HV) tester. The microhardness value of the alloy ribbon was measured 336,8 HV. The discharge capacity of the Mg65Ni25Y5B5 alloy reached 313 mAhg−1. The cycle stability revealed that the alloy ribbon protected at least 76.7% of its initial discharge capacity at 12th charge-discharge cycle.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67478013","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}
This study carries out free-vibration analysis of a cracked tapered beam with a constant width and a linearly varying thickness. The finite-element and component mode synthesis methods are used to ...
{"title":"Free-vibration analysis of cracked beam with constant width and linearly varying thickness","authors":"HaskulMehmet, KisaMurat","doi":"10.1680/JEMMR.21.00015A","DOIUrl":"https://doi.org/10.1680/JEMMR.21.00015A","url":null,"abstract":"This study carries out free-vibration analysis of a cracked tapered beam with a constant width and a linearly varying thickness. The finite-element and component mode synthesis methods are used to ...","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"11 1","pages":"1-13"},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67476591","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}
The use of steel plates in the joints of wooden structures is a common practice. However, because of the presence of natural moisture in the wood, steel sheets are easily corroded and for this reas...
在木结构的接缝处使用钢板是一种常见的做法。然而，由于木材中存在天然水分，钢板很容易被腐蚀，因此……
{"title":"Use of The FRP Plates Instead of Steel Sheets in the Joints of Wooden Structures","authors":"AlsheghriAbdullah, AkgülTahir","doi":"10.1680/JEMMR.21.00057","DOIUrl":"https://doi.org/10.1680/JEMMR.21.00057","url":null,"abstract":"The use of steel plates in the joints of wooden structures is a common practice. However, because of the presence of natural moisture in the wood, steel sheets are easily corroded and for this reas...","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"11 1","pages":"1-7"},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67476604","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}
{"title":"Effect of Structural Parameters on Bending Behaviour of Honeycomb Sandwich Panel","authors":"Çetin Karakaya, S. Ekşi","doi":"10.1680/jemmr.21.00082","DOIUrl":"https://doi.org/10.1680/jemmr.21.00082","url":null,"abstract":"","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67476680","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}
{"title":"Effect of Fiber Direction & Density on Mechanic Behavior of Robotic 3D Printed Composites","authors":"A. İpekçi, B. Ekici","doi":"10.1680/jemmr.21.00120","DOIUrl":"https://doi.org/10.1680/jemmr.21.00120","url":null,"abstract":"","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67477373","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}
In this study, the behavior of two different disks consisting of aramid–epoxy and carbon–epoxy materials under a constant temperature was investigated by using the numerical analysis method. In thi...
{"title":"Numerical analysis of composite disks based on carbon/aramid–epoxy materials","authors":"KayiranHüseyin Fırat","doi":"10.1680/JEMMR.21.00052","DOIUrl":"https://doi.org/10.1680/JEMMR.21.00052","url":null,"abstract":"In this study, the behavior of two different disks consisting of aramid–epoxy and carbon–epoxy materials under a constant temperature was investigated by using the numerical analysis method. In thi...","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"68 1","pages":"1-5"},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67477037","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}
The cast alloy IN625 has been developed recently and evaluated as a candidate material for the 700 °C class A-USC plants. In order to clarify the effects of Cr on δ phase precipitation and the mechanical properties in cast alloy IN625, the aging treatment experiments on cast alloy IN625 with different Cr additions were carried. It was revealed that the precipitation of δ phase in cast alloy IN625 after aging at 750 °C was nearly unaffected by Cr content. The tensile properties of cast alloy IN625 appeared to be insensitive to Cr content, but sensitive to δ phase. Stress rupture tests showed that, the rupture time of aged alloys increased when compared to the solid solution alloys. Besides, when the fraction of δ phase increased from 18% to 35%, different trends emerged in the stress rupture life at 400 MPa and 375 MPa, respectively.
{"title":"δ Phase precipitation in cast alloy IN625 with different Cr content and associated mechanical properties","authors":"Yiqiang Mu, Yuting Cheng, Fei Han, Changshuai Wang, X. Cui, Q. Xu","doi":"10.1680/jemmr.21.00143","DOIUrl":"https://doi.org/10.1680/jemmr.21.00143","url":null,"abstract":"The cast alloy IN625 has been developed recently and evaluated as a candidate material for the 700 °C class A-USC plants. In order to clarify the effects of Cr on δ phase precipitation and the mechanical properties in cast alloy IN625, the aging treatment experiments on cast alloy IN625 with different Cr additions were carried. It was revealed that the precipitation of δ phase in cast alloy IN625 after aging at 750 °C was nearly unaffected by Cr content. The tensile properties of cast alloy IN625 appeared to be insensitive to Cr content, but sensitive to δ phase. Stress rupture tests showed that, the rupture time of aged alloys increased when compared to the solid solution alloys. Besides, when the fraction of δ phase increased from 18% to 35%, different trends emerged in the stress rupture life at 400 MPa and 375 MPa, respectively.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67477733","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}
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