Uspekhi Fiziki Metallov-Progress in Physics of Metals最新文献

Basics of Additive Manufacturing Processes for High-Entropy Alloys 高熵合金增材制造工艺基础

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.561

{"title":"Basics of Additive Manufacturing Processes for High-Entropy Alloys","authors":"","doi":"10.15407/ufm.24.03.561","DOIUrl":"https://doi.org/10.15407/ufm.24.03.561","url":null,"abstract":"). Thus, ∆ S conf for equimolar alloys with 3, 5, 6, 9, and 13 elements equal to 1.10 R , 1.61 R , 1.79 R , 2.20 R , and 2.57 R , respectively. In addition, if the formation enthalpies of two strong intermetallic compounds ( e.g. , NiAl and TiAl) are divided by their respective melting points, the resulting ∆ S conf , 1.38 R and 2.06 R , belong to the same range as the entropy changes of mixing in a system with more than five elements [1]. This evidences that the tendency to ters such as laser power, scanning speed, and powderfeed rate are analysed for their influences on the microstructure and mechanical properties of the final pro duct. The postprocessing techniques for additivemanufactured HEAs are conside red. The importance of steps such as heat treatment, surface finishing, and machin ing in achieving the desired material properties and dimensional accuracy in AM produced HEA components is underlined. Overviewing the HEAs, their application in AM processes, the influence of process parameters, and postprocessing consi derations, this work can act as a useful source of information for researchers on the way to amendment of the understanding and implementation of AM in the HEAs.","PeriodicalId":41786,"journal":{"name":"Uspekhi Fiziki Metallov-Progress in Physics of Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135348120","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

Influence of Modification on the Characteristics of Reinforcing Steels Intended for Reinforced Concrete Structures 改性对钢筋混凝土结构用钢筋性能的影响

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.470

{"title":"Influence of Modification on the Characteristics of Reinforcing Steels Intended for Reinforced Concrete Structures","authors":"","doi":"10.15407/ufm.24.03.470","DOIUrl":"https://doi.org/10.15407/ufm.24.03.470","url":null,"abstract":"We review and analyse the reasons of destabilizing the chemical composition and me chanical characteristics reinforcing lowcarbon steels and present ways to solve these problems. As determined, both the instability of the chemical composition and the nonmetallic inclusions of an elongated and acuteangled shape, containing an exces sive amount of gas and other impurities, reduce the service life of the finished me tallurgical product and lead to a deterioration in the quality of the finished product. As established and proven, one of the ways to maximize the chemicalcomposition stabilization and to improve mechanical characteristics, as well as the quality of the reinforcement, is the steelmelts’ processing with multifunctionalaction modifiers. As determined, the St1kp steel, like other lowalloy steels, is a multicomponent system consisting of 17 or more components. Each of the impurities, as well as deo xidizing modifier elements (Al, Ti, Mg), can change significantly the composition of nonmetallic inclusions, the main matrix, cementite, grain size, mechanical charac teristics, and their stability. As established, after modification, the St1kpsteel grain structure is almost 2 times finer, after which it can be asserted safely that such a material can last longer. As revealed, all mechanicalcharacteristics’ parame ters of the modified metal met the requirements of the State Standards (DSTU) 277094 and exceed the serial ones. This is especially important for reinforced con crete structures, since the insufficient level of mechanical characteristics and their instability cannot guarantee the reliability and durability of their operation. As noted, during the solidification of the modified ingot, mainly volumetric crystalli zation takes place,","PeriodicalId":41786,"journal":{"name":"Uspekhi Fiziki Metallov-Progress in Physics of Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135348113","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

Methods of Improving the Structure and Properties of High-Speed Steels 改善高速钢组织和性能的方法

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.446

引用次数: 0

Influence of Selective Laser Melting Process Parameters on the Microstructure Formation 选择性激光熔化工艺参数对微结构形成的影响

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.530

引用次数: 0

Structural and Phase Transformations in Alloys under the Severe Plastic Deformation 合金在剧烈塑性变形下的组织与相转变

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.593

I. E. Volokitina

引用次数: 0

Modern Fillers of Metal and Polymer Matrices 金属和聚合物基质的现代填料

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.493

引用次数: 0

On the Solubility of Hydrogen in Metals and Alloys 氢在金属和合金中的溶解度

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-09-01 DOI: 10.15407/ufm.24.03.415

引用次数: 0

Characterization Methods of Heat Flows in Solids 固体热流的表征方法

IF 1.6

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-06-01 DOI: 10.15407/ufm.24.02.239

引用次数: 0

Aluminizing of Metal Surfaces by Electric-Spark Alloying 电火花合金化金属表面的渗铝

IF 1.6

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-06-01 DOI: 10.15407/ufm.24.02.282

引用次数: 0

Design of a Two-Layer Al–Al2O3 Coating with an Oxide Layer Formed by the Plasma Electrolytic Oxidation of Al for the Corrosion and Wear Protections of Steel 铝等离子体电解氧化形成氧化层的两层Al - al2o3钢防腐耐磨涂层的设计

IF 1.6

Uspekhi Fiziki Metallov-Progress in Physics of Metals Pub Date : 2023-06-01 DOI: 10.15407/ufm.24.02.319

引用次数: 3