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"Precipitation behavior prior to hot roll in the cold-rolled Al-Mg and Al-Mg-Zr alloys " 冷轧Al-Mg和Al-Mg- zr合金热轧前析出行为
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-09-10 DOI: 10.31577/km.2022.4.247
Mohammad Salim Kaiser, Hossain M. Mamun al Rashed
{"title":"\"Precipitation behavior prior to hot roll in the cold-rolled Al-Mg and Al-Mg-Zr alloys \"","authors":"Mohammad Salim Kaiser, Hossain M. Mamun al Rashed","doi":"10.31577/km.2022.4.247","DOIUrl":"https://doi.org/10.31577/km.2022.4.247","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"52 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75786561","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: 1
"Initiation mechanism on transverse microstructure and properties inhomogeneity of hot-rolled low-carbon steel plate " 热轧低碳钢板横向组织与性能不均匀性的产生机理
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-09-10 DOI: 10.31577/km.2022.4.233
Qingsong He, Xufeng Zhang, S. Su, Q. Chen, Jian Su, Ruinan Chen, Bin Tan, Chao Xu, Xu Huang, Q. Dai
{"title":"\"Initiation mechanism on transverse microstructure and properties inhomogeneity of hot-rolled low-carbon steel plate \"","authors":"Qingsong He, Xufeng Zhang, S. Su, Q. Chen, Jian Su, Ruinan Chen, Bin Tan, Chao Xu, Xu Huang, Q. Dai","doi":"10.31577/km.2022.4.233","DOIUrl":"https://doi.org/10.31577/km.2022.4.233","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"39 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73409055","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
"Investigation of microstructure evolution of Inconel 939 joint diffusion brazed using an amorphous liquated Ni-Cr-Fe-Si-B interlayer " 非晶液相化Ni-Cr-Fe-Si-B中间层扩散钎焊Inconel 939接头组织演变的研究
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-09-10 DOI: 10.31577/km.2022.4.223
Hamid Tazikeh, Seyyed Ehsan Mirsalehi, A. Shamsipur
{"title":"\"Investigation of microstructure evolution of Inconel 939 joint diffusion brazed using an amorphous liquated Ni-Cr-Fe-Si-B interlayer \"","authors":"Hamid Tazikeh, Seyyed Ehsan Mirsalehi, A. Shamsipur","doi":"10.31577/km.2022.4.223","DOIUrl":"https://doi.org/10.31577/km.2022.4.223","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"115 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80816239","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: 1
Experimental evaluation and FE simulation of phase transformations and tensile stresses in hot forging and controlled cooling 热锻和控制冷却相变和拉伸应力的实验评价和有限元模拟
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-09-10 DOI: 10.31577/km.2022.4.257
C. Hocalar, N. Saklakoğlu, S. Demirok
{"title":"Experimental evaluation and FE simulation of phase transformations and tensile stresses in hot forging and controlled cooling","authors":"C. Hocalar, N. Saklakoğlu, S. Demirok","doi":"10.31577/km.2022.4.257","DOIUrl":"https://doi.org/10.31577/km.2022.4.257","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"296 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74161052","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
Influence of nano-Si3N4(P) hybridization on the mechanical and quasi-static compression behaviour of AA6082-Metakaolin composites 纳米si3n4 (P)杂化对aa6082 -偏高岭土复合材料力学和准静态压缩性能的影响
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-06-17 DOI: 10.31577/km.2022.3.191
Renjin J Bright, G. Selvakumar, P. Hariharasakthisudhan, M. Sumathi
{"title":"Influence of nano-Si3N4(P) hybridization on the mechanical and quasi-static compression behaviour of AA6082-Metakaolin composites","authors":"Renjin J Bright, G. Selvakumar, P. Hariharasakthisudhan, M. Sumathi","doi":"10.31577/km.2022.3.191","DOIUrl":"https://doi.org/10.31577/km.2022.3.191","url":null,"abstract":"This work studies the mechanical and quasi-static compression behaviour of AA6082/Meta-kaolin composites hybridized with nano-silicon nitride (Si 3 N 4 ) particles. Hybridization with nano-Si 3 N 4 particles was intended to improve the ductility of the composites. The composites were manufactured using an ultrasonication-assisted stir casting process. The weight fraction (wt.%) of Metakaolin was maintained as 7.5 wt.%, and the nano-Si 3 N 4 particles were added by varying their wt.% from 0.5 to 2.5 % at the increment of 0.5 %. A premixing technique was adopted to blend the Metakaolin and Si 3 N 4 reinforcements to improve their wettability and dispersion in the matrix. The tensile properties and microhardness of the composites improved with the incorporation of nano-Si 3 N 4 particles up to 1 wt.%. The compressive strength was higher for the AMC with 1.5 wt.% Si 3 N 4 . The workability of hybrid composites was studied by the cold upsetting process where the composites were subjected to quasi-static compression.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"35 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87959619","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
"Al24.2Si3.25Cu24.2Ni24.2Ti24.2 high-entropy intermetallic alloy: Effect of nitrogen environment sintered microstructure and mechanical properties " Al24.2Si3.25Cu24.2Ni24.2Ti24.2高熵金属间合金:氮环境烧结组织和力学性能的影响
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-06-17 DOI: 10.31577/km.2022.3.163
S. Hassan, G. Nadhreen
{"title":"\"Al24.2Si3.25Cu24.2Ni24.2Ti24.2 high-entropy intermetallic alloy: Effect of nitrogen environment sintered microstructure and mechanical properties \"","authors":"S. Hassan, G. Nadhreen","doi":"10.31577/km.2022.3.163","DOIUrl":"https://doi.org/10.31577/km.2022.3.163","url":null,"abstract":"In this study, a lightweight Al 24 . 2 Si 3 . 25 Cu 24 . 2 Ni 24 . 2 Ti 24 . 2 high-entropy alloy was developed by sonication blending of the pure elements followed by the high-temperature sintering in the nitrogen gas environment. Microstructural characterization of the sintered alloy showed a fair dispersion of the elemental particles in the matrix during the blending process and the absorption of nitrogen, which led to the formation of multiple intermetallic compounds, including the nitrides, during the sintering process. Mechanical characterization of the sintered alloy revealed significantly high microhardness values with relatively lower compressive strength in Al 24 . 2 Si 3 . 25 Cu 24 . 2 Ni 24 . 2 Ti 24 . 2 alloy.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86768580","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
Development of a sustainable novel aluminum alloy from scrap car wheels through a stir-squeeze casting process 用搅拌挤压铸造法从废汽车车轮中开发可持续发展的新型铝合金
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-06-17 DOI: 10.31577/km.2022.3.151
Alaa Abdulhady Jaber, P. Krishnan
{"title":"Development of a sustainable novel aluminum alloy from scrap car wheels through a stir-squeeze casting process","authors":"Alaa Abdulhady Jaber, P. Krishnan","doi":"10.31577/km.2022.3.151","DOIUrl":"https://doi.org/10.31577/km.2022.3.151","url":null,"abstract":"Aluminum alloys are extensively finding applications in many industries, including automotive and aerospace, because of their lightweight. This research produced a novel aluminum alloy using a stir squeeze casting technique. Sustainability analysis of three competing processes to produce the alloy was carried out using Analytical Hierarchy Process (AHP) method. Scrap aluminum alloy wheels from cars were used as the matrix material. High entropy alloy (HEA) was used as the alloying element, with a total weight percentage of 2.6 %. Hardness, tensile and compressive strength tests were conducted for the developed alloy. An optical microscope, SEM, and XRD were used to analyze the microstructure. The produced alloy was heat-treated, and then mechanical properties and microstructure were compared before and after heat treatment. The results showed a significant improvement in hardness and compressive strength after heat treatment. This improvement is mainly attributed to the Si particle precipitation that occurred during the aging process.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"25 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87500742","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: 3
Comparison of the microstructure of ERNiCrFe-7A deposited metal by cold wire GTAW and hot wire GTAW 冷丝GTAW与热丝GTAW沉积ERNiCrFe-7A金属的显微组织比较
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-06-17 DOI: 10.31577/km.2022.3.181
H. Zhu, Kun Liu, Xiangping Xu, J. Zou
{"title":"Comparison of the microstructure of ERNiCrFe-7A deposited metal by cold wire GTAW and hot wire GTAW","authors":"H. Zhu, Kun Liu, Xiangping Xu, J. Zou","doi":"10.31577/km.2022.3.181","DOIUrl":"https://doi.org/10.31577/km.2022.3.181","url":null,"abstract":"ERNiCrFe-7A filler metal is widely used for welding Inconel 690 alloy, which is often considered for fabricating key components such as reactor pressure vessel and steam generator of nuclear island main equipment. In this work, ERNiCrFe-7A deposited metal was prepared by cold wire and hot wire GTAW process separately. The microstructure and mechanism of precipitation of deposited metal were studied by OM, XRD, SEM, and TEM. Results show that both cold wire and hot wire GTAW can get good quality of ERNiCrFe-7A deposited metal. The matrix of deposited metal is γ -austenite. The microstructure of deposited metal has a cellular dendritic characteristic. The intragranular precipitates are MX phases (M = Nb and Ti, X = C and/or N), and the intergranular precipitates are Cr-rich M 23 C 6 phases. The heat input of cold wire GTAW is higher than that of hot wire GTAW, the columnar grains by cold wire GTAW are wider than those of hot wire GTAW, and the number of MX and M 23 C 6 phases by cold wire GTAW is more than that by hot wire GTAW.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"31 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76611259","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
Experimental study on rapid evaluation of modification effect of hypoeutectic Al-Si alloy based on melt solidification process resistivity monitoring 基于熔体凝固过程电阻率监测的亚共晶Al-Si合金变质效果快速评价实验研究
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-06-17 DOI: 10.31577/km.2022.3.139
Ao Wang, Jianming Dong, Dayong Li
{"title":"Experimental study on rapid evaluation of modification effect of hypoeutectic Al-Si alloy based on melt solidification process resistivity monitoring","authors":"Ao Wang, Jianming Dong, Dayong Li","doi":"10.31577/km.2022.3.139","DOIUrl":"https://doi.org/10.31577/km.2022.3.139","url":null,"abstract":"In order to improve the accuracy of rapid evaluation of the modification effect of Al-Si alloy in front of the furnace, the relationship between resistivity change and modification level during melt solidification was experimentally studied. A melt resistivity monitoring system was designed for practical application, including a sample cup, sample cup base support, vacuum aspiration unit, constant current power supply, data acquisition module, and computer. The monitoring system was used to monitor the changes in temperature and resistivity parameters during solidification of ZL101A alloy melt treated with different amounts of Sr modifier. It was found that the curve of melt resistivity changes with temperature at the eutectic solidification stage had a plateau, and the resistivity plateau value decreased with the better alloy modification effect. Therefore, a rapid evaluation model was established of the hypoeutectic Al-Si alloy modification effect in front of the furnace based on resistivity change during melt solidification. The experimental results showed that the evaluation of the modification effect of the hypoeutectic Al-Si alloy could be completed within 3 minutes by using the monitoring system and evaluation model designed in this paper. The accuracy of the evaluation of modification level error within ± 0.5 reaches 80 % taking the metallographic observation method as the standard.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"24 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76737170","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
"Influence of spark plasma sintering and conventional sintering on microstructure and mechanical properties of hypereutectic Al-Si alloy and hypereutectic Al-Si/B4C composites " 火花等离子烧结和常规烧结对过共晶Al-Si合金和过共晶Al-Si/B4C复合材料组织和力学性能的影响
IF 0.7 4区 材料科学
Kovove Materialy-Metallic Materials Pub Date : 2022-06-17 DOI: 10.31577/km.2022.3.171
Melika Ozer, S. Aydogan, A. Ozer, Hanifi Cinic, E. Ayas
{"title":"\"Influence of spark plasma sintering and conventional sintering on microstructure and mechanical properties of hypereutectic Al-Si alloy and hypereutectic Al-Si/B4C composites \"","authors":"Melika Ozer, S. Aydogan, A. Ozer, Hanifi Cinic, E. Ayas","doi":"10.31577/km.2022.3.171","DOIUrl":"https://doi.org/10.31577/km.2022.3.171","url":null,"abstract":"Al-Si compacts and Al-Si/B 4 C composites were fabricated by conventional cold pressing + sintering and spark plasma sintering techniques. The effects of powder metallurgy techniques on density, microstructural properties, hardness, and transverse rupture strength were investi-gated. The advantages of spark plasma sintering, which is one of the fast sintering techniques, over conventional sintering were discussed. Green densities and sintered densities were found to decrease with increasing B 4 C addition. The relative density values of the samples produced with spark plasma sintering are over 96 %. B 4 C particles were clustered at the grain boundaries of the master alloy and/or in the intergranular pores. An increase of approximately 40 % was determined in the hardness values of the spark plasma sintering samples compared to the cold pressing+sintering samples. Transverse rupture strength was increased in spark plasma sintering samples containing 5 and 10 wt.% B 4 C.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"64 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89903408","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
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