{"title":"Increasing wear resistance of components made of 50MnSi4 steel by Fe-Cr-C-Mo based hardfacing alloys","authors":"P. Sejč, Tomáš Világoš, Z. Gábrišová, B. Vanko","doi":"10.31577/km.2022.6.373","DOIUrl":"https://doi.org/10.31577/km.2022.6.373","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90429052","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":"Optimizing microstructure and mechanical properties of NiAl-9Mo alloy by Zr addition and suction casting process","authors":"Yongcun Li, Wenjun Zhu, Y. Qi, Y. Wang","doi":"10.31577/km.2022.6.403","DOIUrl":"https://doi.org/10.31577/km.2022.6.403","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87110469","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}
M. Podobová, V. Puchý, L. Falat, R. Džunda, M. Besterci,
{"title":"Waste metals based metal-matrix ceramic-reinforced composites for friction applicationsStructural properties and cyclic oxidation behavior of Ni-Al-Y superalloys","authors":"M. Podobová, V. Puchý, L. Falat, R. Džunda, M. Besterci,","doi":"10.31577/km.2022.6.351","DOIUrl":"https://doi.org/10.31577/km.2022.6.351","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72386537","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 boron addition on microstructure and toughness of Ti-containing weld metals","authors":"Bingxin Wang, Jing Li","doi":"10.31577/km.2022.4.341","DOIUrl":"https://doi.org/10.31577/km.2022.4.341","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81128409","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":"\"Investigation of the effect of shot blasting on the surface properties of the HA coatings processed by the EPD method \"","authors":"Ali Ihsan Bahcepinar, I. Aydin","doi":"10.31577/km.2022.4.293","DOIUrl":"https://doi.org/10.31577/km.2022.4.293","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80325900","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 microstructure, microhardness, and oxidation resistance of ternary model Ni-13Al--2Y (at.%) and Ni-11Al-4Y (at.%) superalloys were studied in detail. The microstructures of alloys consisted of primary γ -Ni dendrites and residual eutectic. The Ni 17 Y 2 intermetallic and γ -Ni were the major constituents of the eutectic phase mixture. The microhardness value of Ni-11Al-4Y alloy was higher than that of Ni-13Al-2Y alloy because of the higher amount of relatively harder eutectic. With increasing Y concentration from 2 to 4 at.%, the mass gain, oxide scale thickness, and oxidation rate remarkably increased. For both alloys, the oxide scale was comprised of three layers: NiO as a surface layer, Al 2 O 3 as an inner layer in the metal/oxide interface, and mixed Al/Y oxides as an internal layer. Although the studied alloys exhibited fairly good scale adherence in conjunction with almost no important scale spallation, they exhibited faster oxidation kinetics along with higher mass gains.
{"title":"Structural properties and cyclic oxidation behavior of Ni-Al-Y superalloys","authors":"Mehmet Sahin Atas, M. Yildirim","doi":"10.31577/km.2022.4.281","DOIUrl":"https://doi.org/10.31577/km.2022.4.281","url":null,"abstract":"The microstructure, microhardness, and oxidation resistance of ternary model Ni-13Al--2Y (at.%) and Ni-11Al-4Y (at.%) superalloys were studied in detail. The microstructures of alloys consisted of primary γ -Ni dendrites and residual eutectic. The Ni 17 Y 2 intermetallic and γ -Ni were the major constituents of the eutectic phase mixture. The microhardness value of Ni-11Al-4Y alloy was higher than that of Ni-13Al-2Y alloy because of the higher amount of relatively harder eutectic. With increasing Y concentration from 2 to 4 at.%, the mass gain, oxide scale thickness, and oxidation rate remarkably increased. For both alloys, the oxide scale was comprised of three layers: NiO as a surface layer, Al 2 O 3 as an inner layer in the metal/oxide interface, and mixed Al/Y oxides as an internal layer. Although the studied alloys exhibited fairly good scale adherence in conjunction with almost no important scale spallation, they exhibited faster oxidation kinetics along with higher mass gains.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72811365","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}
Xiaopei Guo, Tao Li, Zhiqiang Shang, Guannan Li, Yafeng Li
{"title":"\"Effect of tempering process on mechanical properties of high titanium microalloyed steels containing niobium \"","authors":"Xiaopei Guo, Tao Li, Zhiqiang Shang, Guannan Li, Yafeng Li","doi":"10.31577/km.2022.4.303","DOIUrl":"https://doi.org/10.31577/km.2022.4.303","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79535076","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":"\"Investigation of the influence of low-frequency harmonic oscillations on deposited metal \"","authors":"S. Novykov","doi":"10.31577/km.2022.4.315","DOIUrl":"https://doi.org/10.31577/km.2022.4.315","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79822885","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}
H. Yao, X. Zha, Y. Xiong, Shubo Wang, M. Huttula, W. Cao
The microstructure, corrosion resistance, and stress corrosion cracking behavior of an as-cast and solid-solution Mg-1.8Zn-0.5Zr-1.5Gd biomagnesium alloy after extrusion deformation were studied. Results show that when the extrusion ratio was 7.7 and the extrusion temperatures were 350 and 360 ◦ C, the as-cast and solid-solution alloys underwent complete dynamic recrystallization, and the grains were significantly refined. The precipitated phase in the extruded alloy is mainly composed of a nano-scale (Mg, Zn) 3 Gd and an Mg 2 Zn 11 phase. A small amount of undissolved and broken micron-sized (Mg, Zn) 3 Gd phase particles appeared in the as-cast extruded alloy. The electrochemical corrosion produced during the stress corrosion process peeled off the (Mg, Zn) 3 Gd phase particles and induced rapid dissolution of the adjacent matrix. As a result, stresses were accumulated, and stress corrosion sensitivity occurred. At the same time, some larger-sized cracks appeared in the tensile fracture of the alloy. The difference in grain size and orientation in different regions of the solid-solution extruded alloy leads corrosion fracture to be composed of parallel grooves in different directions. Solution treatment of the magnesium alloy was found to reduce the stress corrosion susceptibility of extruded magnesium alloy and make it promising as a biodegradable implanting material.
{"title":"Stress corrosion cracking behavior of an as-extruded Mg-1.8Zn-0.5Zr-1.5Gd magnesium alloy in a simulated body fluid","authors":"H. Yao, X. Zha, Y. Xiong, Shubo Wang, M. Huttula, W. Cao","doi":"10.31577/km.2022.4.327","DOIUrl":"https://doi.org/10.31577/km.2022.4.327","url":null,"abstract":"The microstructure, corrosion resistance, and stress corrosion cracking behavior of an as-cast and solid-solution Mg-1.8Zn-0.5Zr-1.5Gd biomagnesium alloy after extrusion deformation were studied. Results show that when the extrusion ratio was 7.7 and the extrusion temperatures were 350 and 360 ◦ C, the as-cast and solid-solution alloys underwent complete dynamic recrystallization, and the grains were significantly refined. The precipitated phase in the extruded alloy is mainly composed of a nano-scale (Mg, Zn) 3 Gd and an Mg 2 Zn 11 phase. A small amount of undissolved and broken micron-sized (Mg, Zn) 3 Gd phase particles appeared in the as-cast extruded alloy. The electrochemical corrosion produced during the stress corrosion process peeled off the (Mg, Zn) 3 Gd phase particles and induced rapid dissolution of the adjacent matrix. As a result, stresses were accumulated, and stress corrosion sensitivity occurred. At the same time, some larger-sized cracks appeared in the tensile fracture of the alloy. The difference in grain size and orientation in different regions of the solid-solution extruded alloy leads corrosion fracture to be composed of parallel grooves in different directions. Solution treatment of the magnesium alloy was found to reduce the stress corrosion susceptibility of extruded magnesium alloy and make it promising as a biodegradable implanting material.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79046528","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}
Ali Moradi, A. Heidari, K. Amini, F. Aghadavoudi, R. Abedinzadeh
{"title":"Taguchi analysis of shot peening parameters for surface hardness, wear resistance, roughness, and residual stress in Ti-6Al-4V alloy","authors":"Ali Moradi, A. Heidari, K. Amini, F. Aghadavoudi, R. Abedinzadeh","doi":"10.31577/km.2022.4.267","DOIUrl":"https://doi.org/10.31577/km.2022.4.267","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87237241","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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