Inorganic Materials最新文献_第9页

Evaluation of Error in Residual Stress Measurements by the Hole Drilling Method 钻孔法残余应力测量误差的评定

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700614

A. D. Monakhov, D. V. Grinevich, N. O. Yakovlev

{"title":"Evaluation of Error in Residual Stress Measurements by the Hole Drilling Method","authors":"A. D. Monakhov, D. V. Grinevich, N. O. Yakovlev","doi":"10.1134/S0020168524700614","DOIUrl":"10.1134/S0020168524700614","url":null,"abstract":"We have developed a specimen configuration with a tailored through-thickness residual stress distribution with the aim of working out conditions for assessing residual stresses by both mechanical and physical methods. The procedure for producing such a specimen is based on nonuniform plastic deformation of an aluminum beam with a rectangular cross section in pure bending. During the loading process, the deformed state was monitored on the end face of the specimen by measuring the normal strain field with a digital image correlation system. The depth of the plastically deformed layer was determined to be 1.3 mm. We obtained a stress state of opposite sign, symmetric with respect to the neutral axis. A theoretical distribution of residual stresses after unloading the plastically deformed specimen was evaluated by numerical finite element calculations with allowance for physicomechanical characteristics, elastoplastic hardening, and the stress–strain curve in true coordinates for uniaxial tension of elementary specimens. Residual stresses nonuniform in the thickness direction have been studied by the hole drilling method in accordance with the ASTM E837 standard on two opposite sides of the specimen: in the tension region during deformation and in the compression region. The strain response during drilling was monitored using three-axis strain gage rosettes. The measured longitudinal residual stress component was compared to its theoretical distribution obtained numerically. In particular, the root mean square error of residual stress measurements relative to the theoretical distribution for an aluminum alloy specimen has been shown to reach 18.7 MPa. It is worth noting that larger measurement errors were obtained at small depths, characterized by relatively low strain, comparable to shot noise.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 4","pages":"553 - 559"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583582","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

Distinctive Features of the Grain Size Reduction Process in a TiC–NiCr Material Produced by SHS Extrusion SHS挤压TiC-NiCr材料晶粒细化过程的特点

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700894

M. S. Antipov, L. S. Stel’makh, A. M. Stolin, P. M. Bazhin

引用次数: 0

Study of Dielectric Properties of Decomposing Materials during Heating 加热过程中分解材料介电特性的研究

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700705

V. P. Krylov, R. A. Chirkov, A. E. Zhitelev, M. O. Zabezhailov

{"title":"Study of Dielectric Properties of Decomposing Materials during Heating","authors":"V. P. Krylov, R. A. Chirkov, A. E. Zhitelev, M. O. Zabezhailov","doi":"10.1134/S0020168524700705","DOIUrl":"10.1134/S0020168524700705","url":null,"abstract":"Microwave dielectric properties of materials during heating can be studied by methods based on the use of waveguide cavity resonators. However, since the material is located in a closed space during such measurements, determination of dielectric properties of decomposing materials involves errors related to the filling of the resonator and deposition of decomposition products of the material on its inner conducting surfaces. In this paper, we report a study of dielectric properties of decomposing materials during heating with the use of a waveguide cavity resonator by methods that preclude any effect of destruction products on measurement accuracy. To reduce the effect of the vapor released from the sample surface as a result of the destruction process, additional thin quartz plates were placed on the sample surface. In addition, we used cuvettes whose lid prevented the destruction products from entering the resonator. A technique is described for taking into account the effect of the plates and cuvette in calculating the dielectric permittivity and dielectric loss tangent of materials during heating in a cavity resonator. The variation in the dielectric properties of a composite material consisting of quartz fabric impregnated with an aluminum chromium phosphate binder and of fiberglass laminate made of quartz fabric impregnated with a phenol formaldehyde binder has been studied above the destruction onset temperature (up to the temperatures at which the materials lose their structural strength). The proposed technique can be useful in studies of the thermophysical properties of decomposing materials for assessing changes in their dielectric properties under high-temperature service conditions.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 4","pages":"450 - 455"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583454","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

Phase Equilibria in the LiF–K2CrO4–KCl–KBr Stable Tetrahedron of the Li+,K+||F–,Cl–,Br–,({text{CrO}}_{4}^{{2 - }}) Quinary Reciprocal System Li+,K+||F -,Cl -,Br -, ({text{CrO}}_{4}^{{2 - }})五元互易体系的LiF-K2CrO4-KCl-KBr稳定四面体的相平衡

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700961

A. S. Egorova, M. A. Sukharenko, I. S. Portnova, I. K. Garkushin

引用次数: 0

Paramagnetic Meissner Effect in Superconducting Rhodium Borides with and without a Magnetic Subsystem 有无磁子系统的超导硼化铑顺磁迈斯纳效应

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524701012

S. A. Lachenkov, V. A. Vlasenko, A. Yu. Tsvetkov, M. A. Kononov

引用次数: 0

Impact Toughness of Low-Carbon, Low-Alloy Steel with a Ferrite–Bainite Microstructure from Multiple Test Results 铁素体-贝氏体低碳低合金钢的冲击韧性

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700882

M. M. Kantor, K. G. Vorkachev, V. A. Bozhenov, K. A. Solntsev

{"title":"Impact Toughness of Low-Carbon, Low-Alloy Steel with a Ferrite–Bainite Microstructure from Multiple Test Results","authors":"M. M. Kantor, K. G. Vorkachev, V. A. Bozhenov, K. A. Solntsev","doi":"10.1134/S0020168524700882","DOIUrl":"10.1134/S0020168524700882","url":null,"abstract":"To describe general trends in the variation of impact toughness and cold brittleness, we have studied two low-carbon, low-alloy, low-sulfur steels having a ferrite–bainite microstructure and similar in chemical composition. According to results of multiple impact bending tests in the temperature range of the ductile-to-brittle transition, the cold resistance (quantified by the fraction of the ductile component on fracture surfaces of specimens) of the steel containing less sulfur and carbon (0.002% S and 0.106% C) is considerably higher than that of the steel richer in S and C (0.008% S and 0.120 C). The bainite content in the ferrite–bainite microstructure of the steel containing more S and C exceeded that in the steel with lower S and C content. The formation of cleavage sites in the steel containing more S and C predominantly involved MnS. The nonmetallic inclusions in the steel containing less S and C had no effect on cleavage nucleation. Splits were observed on only a small fraction of fracture surfaces in the steel specimens containing less S and C and on almost all fracture surfaces of the steel specimens containing more S and C. Unlike in steels of the X80 strength level, the formation of splits in quenched and tempered low-carbon, low-alloy, low-sulfur steels follows the intergranular fracture mechanism. Splits were formed within bainite bands along bainite packet boundaries when the region of the highest normal stress coincided with the axial segregation region. Typical intergranular fracture sites in steel specimens containing more S and C were MnS inclusions, whereas in the steel specimens containing less S and C no effect of MnS on the formation of intergranular splits was detected.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 6","pages":"801 - 814"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583590","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

Pecularities of Heavily Boron-Doped Nanodiamond Formation during High-Pressure Pyrolysis of 9-Borabicyclo[3.3.1]nonane Dimer 9-硼比环[3.3.1]壬烷二聚体高压热解过程中重掺硼纳米金刚石形成的特性

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700973

K. M. Kondrina, S. G. Lyapin, A. A. Shiryaev, Yu. V. Grigor’ev, E. A. Ekimov

引用次数: 0

Purity Level of Vanadium, Niobium, and Tantalum (according to Materials in the Exhibition–Collection of Extrapure Substances) 钒、铌、钽的纯度等级（根据展览资料-萃取物收藏）

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700900

O. P. Lazukina, E. N. Volkova, K. K. Malyshev, M. F. Churbanov

引用次数: 0

Optimization of the Tetragonal-to-Cubic Phase Transition of Lithium Lanthanum Zirconate Solid Electrolyte with the Use of Mechanical Activation 机械活化法优化锆酸镧锂固体电解质的四方向立方相变

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S002016852470081X

G. B. Kunshina, I. V. Bocharova, A. M. Kalinkin

{"title":"Optimization of the Tetragonal-to-Cubic Phase Transition of Lithium Lanthanum Zirconate Solid Electrolyte with the Use of Mechanical Activation","authors":"G. B. Kunshina, I. V. Bocharova, A. M. Kalinkin","doi":"10.1134/S002016852470081X","DOIUrl":"10.1134/S002016852470081X","url":null,"abstract":"We have studied the effect of mechanical activation and subsequent sintering on the formation of solid electrolyte powder with a cubic structure and the composition Li6.4Al0.2La3Zr2O12 (LLZ) during solid-state synthesis with the use of the low-melting-point crystalline hydrates (ZrO(NO3)2∙2H2O, Al(NO3)3∙9H2O, and La(NO3)3∙6H2O). Mechanical activation of the sinter cake after the first synthesis step at 900°C, in an AGO-2S planetary mill in 4 × 1 min mode at a relative centrifugal force of 20g led to the formation of powder with a particle size d = 0.42 μm, as evaluated from its specific surface area. Subsequent sintering of the mechanically activated LLZ powder at 1000°C for 4 h ensured a complete transformation of tetragonal LLZ into a highly conductive cubic phase, c-LLZ. The room-temperature ionic conductivity of c-LLZ was 2 × 10–4 S/cm, as determined by electrochemical impedance spectroscopy.","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 5","pages":"676 - 685"},"PeriodicalIF":0.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583634","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

Growth of TiSiN Films by Room-Temperature Reactive Magnetron Sputtering 室温反应磁控溅射生长TiSiN薄膜

IF 0.9 4区材料科学

Inorganic Materials Pub Date : 2025-03-10 DOI: 10.1134/S0020168524700948

V. S. Sulyaeva, M. M. Syrokvashin, A. K. Kozhevnikov, E. N. Ermakova

引用次数: 0