Metallurgical Research & Technology最新文献_第6页

Microstructure and mechanical properties of 15-5 PH stainless steel under different aging temperature 15-5 PH不锈钢在不同时效温度下的组织与力学性能

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021078

Chunhui Jin, Honglin Zhou, L. Yuan, Bei Li, Zhang Kewei, C. Huiqin, Zhao Jinhua

{"title":"Microstructure and mechanical properties of 15-5 PH stainless steel under different aging temperature","authors":"Chunhui Jin, Honglin Zhou, L. Yuan, Bei Li, Zhang Kewei, C. Huiqin, Zhao Jinhua","doi":"10.1051/metal/2021078","DOIUrl":"https://doi.org/10.1051/metal/2021078","url":null,"abstract":"The influence of aging temperature on microstructure and mechanical properties of Cr15Ni5 precipitation hardening stainless steel (15-5 PH stainless steel) were investigated at aging temperature range of 440–610 °C. The tensile properties at ambient temperature of the 15-5 PH stainless steel processed by different aging temperatures were tested, and the microstructural features were further analyzed utilizing optical microscope (OM), transmission electron microscope (TEM), electron backscatter diffraction (EBSD) as well as X-ray diffraction (XRD), respectively. Results indicated the strength of the 15-5 PH stainless steel was firstly decreased with increment of aging temperature from 440 to 540 °C, and then increased with the increment of aging temperature from 540 to 610 °C. The strength and ductility were well matched at aging temperature 470 °C, and the yield strength, tensile strength as well as elongation were determined to be 1170 MPa, 1240 MPa and 24%, respectively. The microstructures concerning to different aging temperatures were overall confirmed to be lath martensite. The strengthening mechanisms induced by dislocation density and the second phase precipitation of Cu-enriched metallic compound under different aging temperatures were determined to be the predominant strengthening mechanisms controlling the variation trend of mechanical properties corresponding to different aging temperatures with respect to 15-5 PH stainless steel.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"42 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72494088","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

Effects and mechanism of MgO on carbothermal reduction of Fe2TiO4 MgO对Fe2TiO4碳热还原的影响及机理

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021059

Yunfei Chen, Xiangdong Xing

引用次数: 1

Influence of the Mg content on the austenite grain growth in heat-affected zone of offshore engineering steels considering TiN particle pinning and Mo solute drag effects 考虑TiN颗粒钉扎和Mo溶质阻力效应的Mg含量对海洋工程钢热影响区奥氏体晶粒生长的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021052

Xiao-qian Pan, Jian Yang, Yinhui Zhang, Joo-Chang Park, H. Ono

{"title":"Influence of the Mg content on the austenite grain growth in heat-affected zone of offshore engineering steels considering TiN particle pinning and Mo solute drag effects","authors":"Xiao-qian Pan, Jian Yang, Yinhui Zhang, Joo-Chang Park, H. Ono","doi":"10.1051/metal/2021052","DOIUrl":"https://doi.org/10.1051/metal/2021052","url":null,"abstract":"The submicrometre and nanometre particle characteristics, soluble element contents, and austenite grain growth behaviors in heat-affected zone of offshore engineering steels with 0.0002 (2Mg) and 0.0042 (42Mg) wt.% Mg during the simulated welding process were studied. With increasing the Mg content in steel from 0.0002 to 0.0042 wt.%, the submicron particles are decreased in number and size with their compositions evolved from TiN to TiN + MgO capped with Mo carbides, and the number density of small-sized nanoparticles increases and large-sized nanoparticles decreases. When the temperature is below 1250 °C, the grain growth rate of two steels is not much different due to the larger Mo solute drag effect in 2Mg and larger pinning force in 42Mg. When the temperature is 1250–1300 °C, the small-sized nanoparticles in 42Mg is more than that in 2Mg, resulting in the larger pinning force and smaller grain growth rate in 42Mg. When heated to 1300–1350 °C and soaked at 1350 °C for 300 s, since large quantities of particles smaller than the critical size (dcr) are dissolved, the grain growth rate in 2Mg is smaller than that in 42Mg due to the greater amount of the effective pinning particles and larger pinning force in 2Mg.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"9 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84238078","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

Research on roll profile electromagnetic control ability in optimal electromagnetic stick parameter 最优电磁棒参数下轧辊型线电磁控制能力研究

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021031

Tingsong Yang, Jiayang Liu, X. Ren, Yingwei Wang, F. Du

{"title":"Research on roll profile electromagnetic control ability in optimal electromagnetic stick parameter","authors":"Tingsong Yang, Jiayang Liu, X. Ren, Yingwei Wang, F. Du","doi":"10.1051/METAL/2021031","DOIUrl":"https://doi.org/10.1051/METAL/2021031","url":null,"abstract":"Roll profile electromagnetic control technology (RPECT) is a new strip flatness control technology. As the control element, electromagnetic sticks have a great effect on the control ability of RPECT. To improve control ability and extend service life, effective control ratio of electromagnetic stick is presented in this paper. The ratio is designed based on the structure character of electromagnetic stick, and can be used to evaluate the key parameter of electromagnetic stick. Based on the coupled FEM, the heat flux density of the roll inner hole and the temperature distribution of electromagnetic stick are analyzed for different effective control ratios; the average contact pressure between electromagnetic stick and electromagnetic control roll is studied to evaluate the change of force roll profile; the state of roll profile and the stress state of the roll are researched to analyze the comprehensive control ability. Through the verification on the roll profile electromagnetic control experimental platform, the reasonable selection range of effective control ratio, which can be used to expand the roll profile axial affected area, is from 0.5 to 0.583. In order to increase the roll crown, the selection of ηd needs to consider the current density and the optimal selection range of effective control ratio.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"25 6 1","pages":"305"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82694448","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

Influence of torch oscillation on the microstructure of Colmonoy 6 overlay deposition on SS304 substrate with PTA welding process 焊枪振荡对PTA焊接SS304基板上6合金镀层组织的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021045

V. Kalyankar, Avishkar Bhoskar

引用次数: 11

Effect of fluorine on surface tension of CaO-SiO2-Al2O3-Na2O-CaF2 mold flux 氟对CaO-SiO2-Al2O3-Na2O-CaF2助焊剂表面张力的影响

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021040

Q. Gao, Longhu Cao

{"title":"Effect of fluorine on surface tension of CaO-SiO2-Al2O3-Na2O-CaF2 mold flux","authors":"Q. Gao, Longhu Cao","doi":"10.1051/METAL/2021040","DOIUrl":"https://doi.org/10.1051/METAL/2021040","url":null,"abstract":"The surface tension of mold flux is an important parameter for controlling the quality of continuous billet, affected deeply by the compositions of mold flux and temperature, andclosed related with the structure of mold flux. In the present study, the effect of CaF2 and temperature on the surface tension of CaO-SiO2 -Al2 O3 -Na2 O-CaF2 mold flux melts is investigated by the pulling cylinder method; furthermore, the structure of melts is determined by FT-IR spectroscopy to analyze the change mechanism of surface tension. The results indicate that the variation of surface tension is in accord with that of structure of melts. The surface tension of melt decreases with the increase of CaF2 mass fraction, and this tendency becomes more apparent at higher temperature. The FT-IR spectra show thatboth the amount of Ob andthe degree of structural polymerization of melts decrease as the CaF2 content increases. This is because the Si-Ob bonds in the [SiO4 ]-tetrahedrons are broken by F− and transformed into Si-F bonds, and the silicon-oxygen anions with more complex structure were depolymerized into silicon-oxygen anions containing fluorine with simpler structure, resulting in an increase of Si-F saturated bonds on the melt surface, and thusreducing the surface tension of melts.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"7 1","pages":"316"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86991025","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 investigation on static recrystallization behavior of a low carbon Nb–V–Ti microalloyed steel 一种低碳Nb-V-Ti微合金钢静态再结晶行为的实验研究

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021003

Fei Li, Liwen Zhang, Chi Zhang, Qing Yang, Chaoqun Li, P. Mao

引用次数: 1

Study on a straightening process by reciprocating bending for metal profiles 金属型材往复弯曲矫直工艺研究

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021081

Q. Meng, G. Yu, Xue-ying Huang, Hong-Lei Sun, Jun-min Zhao

引用次数: 4

Oxidation and hot corrosion behavior of a directionally solidified W richen cobalt-based superalloy 定向凝固富W钴基高温合金的氧化和热腐蚀行为

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/METAL/2021033

Yue Zhou, C. Mo, Hong Wang

引用次数: 0

Transfer of rare earth to alloy and inclusion during slag-metal reaction 渣金属反应过程中稀土向合金的转移和夹杂物

IF 1.1 4区材料科学

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI: 10.1051/metal/2021057

Xiaoyong Gao, Lin Zhang, Lifeng Zhang, Q. Ren, X. Qu

引用次数: 3