Metallurgical Research & Technology最新文献_第2页

Investigation on carbide dispersion modified by magnesium and rare earth in high-carbon martensitic stainless steel 高碳马氏体不锈钢中镁和稀土改性碳化物分散体的研究

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023068

Yutang Li, Haoran Zhu, Dengping Ji, Bin Luo, Jianxun Fu

{"title":"Investigation on carbide dispersion modified by magnesium and rare earth in high-carbon martensitic stainless steel","authors":"Yutang Li, Haoran Zhu, Dengping Ji, Bin Luo, Jianxun Fu","doi":"10.1051/metal/2023068","DOIUrl":"https://doi.org/10.1051/metal/2023068","url":null,"abstract":"Fine and uniform carbides play a beneficial role in the high hardness and wear resistance of martensitic stainless steel. This paper investigates the effect of magnesium and rare earth(RE) on the dispersion of carbides in a high-carbon martensitic stainless steel. The results show that RE-Al-O and RE-Al-O-S inclusions were generated in RE-containing steel, while Mg-Al-O+(Ca, Mn)S and MgO+CaS inclusions were in Mg-containing steel. MC, M 7 C 3 , and M 23 C 6 types of carbides were detected in both RE-containing and Mg-containing steels, which is consistent with thermodynamic calculation. The RE-Al-O inclusion can act as heterogeneous nuclei for carbides, while Mg-containing inclusions do not promote carbide precipitation for sulfur enrichment. The three-dimensional etching test suggests that RE-containing steel has more serious network carbides and larger carbide sizes than Mg-containing steel. The carbon segregation ratio presents an “M” shape due to δ→γ phase transformation. Rare earth is easy to combine with S and weaken the inhibiting effect of carbon segregation. Thus, magnesium has a stronger inhibitory effect on carbon segregation than rare earth.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136003942","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

Bend forming of aluminum alloy integral panel: a review 铝合金整体板的弯曲成形:综述

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023070

Xiao-Xiao Zhang, Yong-Hua Li

引用次数: 0

Comparison study of rust layers formed on Q420 and weathering steel after 6 years of exposure in marine atmospheres Q420与耐候钢在海洋大气中曝露6年后锈层形成的对比研究

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2022008

Yunxiang Chen, X. Xia, Yao Huang, Y. Hong, Deyuan Lin, Yanjin Lu

引用次数: 0

Effect of Si-based reductive modifying auxiliary on the recovery of iron and the cementitious reactivity of modified EAF slag 硅基还原性改性助剂对改性电炉渣铁回收率及胶凝反应性的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2021094

Xiao-ming Li, Yuqing Wu, Yuwei Ma, H. Xie, Xiangdong Xing

引用次数: 0

Influence of hot forging on microstructure in double tempered H11 hot forging dies 热锻对双回火H11热锻模具组织的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2022004

Sam Joshy, Jayadevan K.R., Merin Sarah George, Benrose Prasad

引用次数: 0

Recycling of chromium sludge to promote aggregation and growth of metal during self-reduction of nickel laterite ore 铬污泥循环利用促进红土镍矿自还原过程中金属的聚集和生长

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2022002

H. Yu, Sheng-qiang Song, R. Cromarty, G. Hang, Qian Hu, Wenke Zhang, Dongming Liu, Z. Xue

{"title":"Recycling of chromium sludge to promote aggregation and growth of metal during self-reduction of nickel laterite ore","authors":"H. Yu, Sheng-qiang Song, R. Cromarty, G. Hang, Qian Hu, Wenke Zhang, Dongming Liu, Z. Xue","doi":"10.1051/metal/2022002","DOIUrl":"https://doi.org/10.1051/metal/2022002","url":null,"abstract":"Addition of stainless steel pickling sludge, which contains hazardous hexavalent chromium, to low-grade nickel laterite ore has the potential to eliminate the hexavalent chromium and promote the aggregation and growth of iron-nickel particles during reduction with anthracite. The effect of chromium sludge on the aggregation and growth of metal particles during a self-reduction process of nickel laterite ore has been studied. The detoxification effect of hexavalent chromium in the sludge was evaluated using the standard TRGS 613 leaching test. Results showed that with increasing chromium sludge addition, the size of metal particles increased. With the addition of 13.94% by mass chromium sludge the average metal particle size in the reduce ore increased from 0.42 µm to 1.38 µm while the recovery of Fe, Ni and Cr increased from 53.73%, 19.39% and 33.36% to 78.33%, 69.22% and 58.26%, respectively. It is proposed that a low melting point eutectic phase of FeS formed in the reduced products, significantly promoted the migration and aggregation of metal particles. Leaching tests indicated that the original chromium sludge released > 600 mg/kg Cr(VI) while the slag from the combined laterite and chromium sludge released less than the EPA limit of 2 mg/kg Cr(VI).","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"96 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86047853","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: 2

Thermodynamics and mechanisms of silver tailings roasting processes 银尾矿焙烧过程热力学及机理研究

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2022001

Jie Chang, Aifang Pan, Yuzhao Ma, Yue Sun, Shentao Hu, Kuimeng Li

{"title":"Thermodynamics and mechanisms of silver tailings roasting processes","authors":"Jie Chang, Aifang Pan, Yuzhao Ma, Yue Sun, Shentao Hu, Kuimeng Li","doi":"10.1051/metal/2022001","DOIUrl":"https://doi.org/10.1051/metal/2022001","url":null,"abstract":"To separate and extract all the useful components of tailings, taking silver tailings as the object, the thermodynamics of silver tailings during the roasting processes was investigated, and the phases transformation mechanism of major minerals were obtained. Based on the mineralogy characteristics of silver tailings, the standard Gibbs free energy changes for the chemical reactions in the roasting processes were calculated; the thermal chemical behaviors and the mineral phases transformation were investigated using TG/DTG-DSC and XRD; and the microstructure changes with chemical composition of microregions were characterized through SEM-EDS. The thermochemical reaction characteristics for the roasting activation of tailings and sodium carbonate at different temperatures were as follows: at 450–650 °C, the ankerite, siderite and sulfide in tailings were oxidized and decomposed, while the crystal transformation of quartz and chlorite occurred; at 650–750 °C, quartz, muscovite and chlorite decomposed to form soluble sodium silicate, sodium aluminum silicate, diopside, sodium ferrite and copper ferrite etc; at 750–800 °C, due to the increase in products with low melting point, the roasted samples melted. During the roasting processes, the surface of minerals depressed and the structures were destroyed. These results can provide a theoretical foundation for thoroughly resource utilization of tailings.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90287287","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

Alkaline refining of crude lead: a method of arsenic removal and the behavior of arsenic in the process 粗铅的碱性精炼:一种除砷的方法及过程中砷的行为

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2021090

R. Zhu, Hailin Long, Haoyu Li, Huimin Xie, Shao-hua Yin, Yongmi Wang, Libo Zhang, Shiwei Li

引用次数: 0

Defects analysis of the ultra-thick steel pipes using a mixed explicit–implicit FEM 用显隐混合有限元法分析超厚钢管的缺陷

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2021101

Yong-Zheng Jiang, Ya-Fan Hu, Z. Fu, Shengqing Zhu

{"title":"Defects analysis of the ultra-thick steel pipes using a mixed explicit–implicit FEM","authors":"Yong-Zheng Jiang, Ya-Fan Hu, Z. Fu, Shengqing Zhu","doi":"10.1051/metal/2021101","DOIUrl":"https://doi.org/10.1051/metal/2021101","url":null,"abstract":"The ultra-thick wall steel pipes are very likely to have quality defects in stretch-reduction hot rolling process, and it is preferred to study these defects by simulation methods. However, traditional FEM often has the problems of convergency difficulty and time consuming for solving complex large deformation problems. Therefore, in this study, a mixed explicit-implicit FEM, was adopted for solving the thermo-mechanical coupled process of the stretch-reduction hot rolling. Multidimensional heat transfer as well as mechanical boundary conditions were acted simultaneously, and the accuracy of the model was validated by industrial experiments. Results showed that the simulation results are very consistent with the actual rolling results. Three typical rolling defects were accurately predicted, i.e., inner hexagon, thickened ends and linear mark. Besides, it is discovered that the uneven distributions of stress, strain and temperature are important causes for the rolling defects, and these influences are also presented and discussed. This paper presents an efficient and precise numerical modelling method so as to provide theoretical guidance for the production of ultra-thick wall pipes.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"40 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77804667","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

Research progress on granulation process of iron and steel slag 钢铁渣造粒工艺研究进展

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI: 10.1051/metal/2021100

Wen-long Lin, Hui Wang, Donghui Liu, Hongwei Xing, Chao Liu, Yuzhu Zhang, S. Li

{"title":"Research progress on granulation process of iron and steel slag","authors":"Wen-long Lin, Hui Wang, Donghui Liu, Hongwei Xing, Chao Liu, Yuzhu Zhang, S. Li","doi":"10.1051/metal/2021100","DOIUrl":"https://doi.org/10.1051/metal/2021100","url":null,"abstract":"Efficient utilization of iron and steel slag is one of the important measures to achieve peak carbon emissions and carbon neutrality in the iron and steel industry. Improving the recycling rate of iron and steel slag has become an urgent problem to be solved by scholars and enterprises at home and abroad. Therefore, it is of great significance to continuously optimize the recycling process of iron and steel slag and waste heat recovery technology. By comparing and analyzing the advantages and disadvantages of different granulation processes for iron and steel slag, the disadvantages of using dry or wet granulation processes alone for iron and steel slag are pointed out in this paper. Then, a combined granulation process mode combining dry and wet processes is proposed to improve the processing efficiency of molten slag. The increase in resource conversion rate and the quality of granulated slag after primary granulating of iron and steel slag contribute to reducing the amount of slag to be treated secondarily. Furthermore, the energy consumption and pollutant emissions of slag secondary treatment will be decreased as well. It is intended to provide a reference for slag treatment technology and slag utilization rate expansion in iron and steel enterprises.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"298 2 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72928325","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