Journal of Metallic Material Research最新文献_第4页

Influence of the M and M’ Metals on the Carbides Population in As-Cast M’-based Alloys Designed to be MC-Strengthened M和M′金属对铸态mc强化M′基合金中碳化物数量的影响

Journal of Metallic Material Research Pub Date : 2019-04-19 DOI: 10.30564/JMMR.V2I1.604

P. Berthod

{"title":"Influence of the M and M’ Metals on the Carbides Population in As-Cast M’-based Alloys Designed to be MC-Strengthened","authors":"P. Berthod","doi":"10.30564/JMMR.V2I1.604","DOIUrl":"https://doi.org/10.30564/JMMR.V2I1.604","url":null,"abstract":"High temperature applications such as turbine blades for aeronautics or molten glass-shaping tools require the use of refractory metallic materials. Among the later ones, cast superalloys based on some transition metals and reinforced by MC carbides stay in good place and their metallurgy merits to be well known. This work consists in a general exploration of the as-cast microstructures which can be obtained after solidification and solid state cooling down to ambient temperature for a wide series of alloys for which the base element and the MC-former element both vary. For fixed contents in chromium and carbon contents, the compositions of a total of nineteen alloys were considered. These alloys are based on Ni, Co, Fe or Nb and the M content was each time chosen to favor the appearance of TiC, TaC, NbC, HfC or ZrC, as single carbide in a given alloy. After elaboration, metallographic samples were observed by electron microscopy to investigate the obtained microstructures. The obtained results show first that the MC carbides were in many cases successfully obtained at the expense of other possible carbides (for all Co-based alloys for example) but there are also several exceptions (notably for some Ni-based alloys). Second, the obtained monocarbides have a eutectic origin and they are script-liked shaped. However they are here too some exceptions, as the rare HfC obtained in a Nb-base). In general, the results obtained in this work show that the principle of dendritic matrix combined with MC carbides with a script-like morphology is not necessarily obtained: the nature of the {base element, MC-former element} combination governs the microstructure of the alloy in its as-cast state for these particular compositions in chromium and carbon. In some cases other carbides may appear and the microstructures may be even of another type.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114868671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Health Risks of Trace Metals in Wastewater-Fed Fishes: A Case Study 废水养殖鱼类中微量金属的健康风险:个案研究

Journal of Metallic Material Research Pub Date : 2019-04-19 DOI: 10.30564/JMMR.V2I1.540

A. Katip

引用次数: 0

Hot Cracking Susceptibility of 800H and 825 Nickel-Base Superalloys during Welding via Spot Varestraint Test 现场变应变试验研究800H和825镍基高温合金焊接时的热裂敏感性

Journal of Metallic Material Research Pub Date : 2019-04-19 DOI: 10.30564/JMMR.V2I1.958

Chih-Chun Hsieh

引用次数: 3

Study on the tensile and the fatigue behavior of air plasma sprayed YSZ TBC systems 空气等离子喷涂YSZ TBC系统的拉伸和疲劳性能研究

Journal of Metallic Material Research Pub Date : 2019-01-22 DOI: 10.30564/JMMR.V1I1.452

Dipak Kumar

引用次数: 3

Metal Swarf and Cutting Fluid Waste Management in Metal Processing Industry 金属加工行业的金属屑和切削液废弃物管理

Journal of Metallic Material Research Pub Date : 2019-01-22 DOI: 10.30564/JMMR.V1I1.431

N. K. Salihoglu, Z. Amin, Çagla Celikli

{"title":"Metal Swarf and Cutting Fluid Waste Management in Metal Processing Industry","authors":"N. K. Salihoglu, Z. Amin, Çagla Celikli","doi":"10.30564/JMMR.V1I1.431","DOIUrl":"https://doi.org/10.30564/JMMR.V1I1.431","url":null,"abstract":"Metal swarf is unavoidable material in metal processing industry, also metal swarf treatment lead to cost savings by metal waste reduction and removing the cutting fluid waste, that cause to increasing process stability and metal value. It is interested that in how to recycle metal swarf especially when swarf surrounded by cutting fluid, is considered because these waste are classified as hazardous waste. The aim of the study is to increase the process efficiency and environmental performance by metal waste reduction at source which are the first step of the waste hierarchy. The results of the experiments showed that 3391 tons of metal swarf coated with cutting fluids which contained 2.29% cutting fluid be produced annually. It has been found that if the total amount of cutting fluid on the swarf surface be reduced to less than 1% leads to a significant mass reduction in the amount of hazardous waste. In this research, it was considered, 107,922 USD profit at the end of first year and 205,278 USD at the end of second year would be obtained by reducing the cutting fluid content from 2.29% to 0.8% with using cutting fluid that surrounded metal swarf separation equipment in manufacturing location.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127669707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of suspension dispersity and concentration on its flocculation efficiency in static and dynamic flocculators 悬浮液的分散性和浓度对静态和动态絮凝器絮凝效果的影响

Journal of Metallic Material Research Pub Date : 2019-01-22 DOI: 10.30564/JMMR.V1I1.411

N. Rulyov, O. Kravtchenko, F. Concha

{"title":"Effects of suspension dispersity and concentration on its flocculation efficiency in static and dynamic flocculators","authors":"N. Rulyov, O. Kravtchenko, F. Concha","doi":"10.30564/JMMR.V1I1.411","DOIUrl":"https://doi.org/10.30564/JMMR.V1I1.411","url":null,"abstract":"Flocculation presents one of the most effective methods for enhancing separation of both anthropogenic and natural suspensions by sedimentation, filtration and flotation techniques.The flocculation effectiveness much depends on the medium shear rate in a flocculator. The objective of this research comprises the study how the suspension dispersity and concentration effect the efficiency of its flocculation in a static tubular flocculator and in a dynamic Couette flocculator. The studies used aqueous suspensions of ultra-fine calcium carbonate (<7 μm) and fine silica (<90 μm) as objects. It was established that treatment of ultra-fine calcium carbonate suspension in a static flocculator produced in the range 400-450 s-1 a pronounced primary maximum in the dependence \"flocculation efficiency/shear rate\". The increase of the suspension concentration to 70 g/l and above resulted in a small secondary maximum of the flocculation efficiency in the region of around 950 s-1. This can be due to a higher dissolution rate of flocculant and a corresponding increase of particles adhesion forces in flocs, which counteract viscous forces destroying them. In silicon dioxide suspension treatment, the primary and secondary peaks occur at both small and high suspension concentrations, but in a latter case, they are by far more pronounced and comparable in magnitude.","PeriodicalId":232294,"journal":{"name":"Journal of Metallic Material Research","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115255065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STUDY OF DEFORMATION OF ALUMINIUM ALLOY IN EQUAL CHANNEL ANGULAR MATRIX WITH QUASI-SMALL CHANNELS INTERSECTION ANGLE 准小通道交会角等通道角矩阵下铝合金的变形研究

Journal of Metallic Material Research Pub Date : 2019-01-22 DOI: 10.30564/jmmr.v1i1.312

S. Lezhnev

引用次数: 2

Combined effect of thermal shock and hot corrosion on the failure of yttria stabilized zirconia thermal barrier coatings 热冲击和热腐蚀对氧化钇稳定氧化锆热障涂层失效的共同影响

Journal of Metallic Material Research Pub Date : 2019-01-22 DOI: 10.30564/JMMR.V1I1.307

Changhai Zhou, X. Li, R. Pan

引用次数: 1

Common Problems in Metal Material Testing and Solutions 金属材料测试中的常见问题及解决方法

Journal of Metallic Material Research Pub Date : 2018-10-25 DOI: 10.30564/jmmr.v1i1.192

Xiang-Ran Du

引用次数: 0

Influencing Factors and Control Strategies of Heat Treatment Deformation of Metal Materials 金属材料热处理变形的影响因素及控制策略

Journal of Metallic Material Research Pub Date : 2018-10-25 DOI: 10.30564/jmmr.v1i1.190

Qiang Li, Yutao Wang

引用次数: 3