Journal of Iron and Steel Research(International)最新文献_第4页

Erosion corrosion of low-alloy wear-resistant steels in alkaline slurry 低合金耐磨钢在碱性浆料中的侵蚀腐蚀

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30154-1

Feng-ming Song, Lin-xiu Du

{"title":"Erosion corrosion of low-alloy wear-resistant steels in alkaline slurry","authors":"Feng-ming Song, Lin-xiu Du","doi":"10.1016/S1006-706X(17)30154-1","DOIUrl":"10.1016/S1006-706X(17)30154-1","url":null,"abstract":"<div><h3>Abstract</h3><p>Erosion corrosion causes significant problems in various industrial environments through a synergistic effect which results in much greater weight loss than the sum of the weight losses in the individual processes. The erosion-corrosion behavior of three low-alloy steels was investigated in a simulated concrete slurry using the rotation method. The key influencing factors and mechanism of material degradation were analyzed. The experimental results indicate that the weight loss increases with the linear velocity according to a nearly exponential relationship (<em>W = KV<sup>n</sup></em>), where <em>n</em> is 1. 40–2. 14. This weight loss is mainly caused by erosion in the alkaline slurry, and steels with higher tensile strengths show higher erosion-corrosion resistance. The formation of many platelets and ring cracks and their removal from the sample surface during erosion corrosion in the slurry are thought to constitute the mechanism responsible for this weight loss. These platelets and ring cracks are formed by solid particles striking the sample surface. Craters are initially produced and subsequently disappear as they grow and come in contact with each other. Fewer craters were observed on the surfaces of samples that exhibited higher weight loss. The surface of the material became work-hardened because of the effect of the particles striking and scratching, and a deformed layer was produced on the surface for steels of lower strengths, leading to deeper and more abundant gouges.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 1065-1072"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30154-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77336000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 7

Corrosion mechanism research and microstructure analysis of Baosteel No. 3 blast furnace hearth 宝钢3号高炉炉底腐蚀机理研究及显微组织分析

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30148-6

Xun-fu Wang , Qi-jie Zhai

{"title":"Corrosion mechanism research and microstructure analysis of Baosteel No. 3 blast furnace hearth","authors":"Xun-fu Wang , Qi-jie Zhai","doi":"10.1016/S1006-706X(17)30148-6","DOIUrl":"10.1016/S1006-706X(17)30148-6","url":null,"abstract":"<div><h3>Abstract</h3><p>Baosteel No. 3 blast furnace hearth was divided into tuyere area, taphole area, taphole upper side wall and taphole lower side wall according to different working situations. Through chemical composition analysis, scanning electron microscopy, X-ray diffraction, energy dispersive spectrometry and other means, chemical composition and microstructure of different parts of hearth carbon brick were analyzed and markedly different corrosion mechanisms of these areas were found. Zn element in form of ZnO mainly deposited on the hot side of carbon brick. There was no obvious evidence that Zn permeates into carbon bricks and erodes them. Except for taphole area, K, Na, and Fe contents from hot side to cold side gradually rise and fall, resulting in the decrease of apparent porosity, the increase of density and the higher thermal conductivity compared with those of new carbon brick. The higher content of Fe in carbon brick leads to more serious erosion because Fe has greatly changed the physical properties of carbon brick. In the taphole area, the contents of Si and Al present obvious concentration gradient because of the mechanical souring of molten iron and slag. The SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> particles that have different expansion factors with carbon brick damaged the carbon substrate because of temperature fluctuation. The graphitized carbon found on H4 where is the most serious corrosion site means that the carbon brick ever directly contacts with molten iron.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 1016-1022"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30148-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73506473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Comparison of sintering performance of typical specular hematite ores with distinct size distributions 不同粒度分布的典型镜面赤铁矿烧结性能比较

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30147-4

Cong-cong Yang , De-qing Zhu , Ben-jing Shi , Jian Pan , Li-ming Lu , Xiao-bo Li , Ya-ping Mo

{"title":"Comparison of sintering performance of typical specular hematite ores with distinct size distributions","authors":"Cong-cong Yang , De-qing Zhu , Ben-jing Shi , Jian Pan , Li-ming Lu , Xiao-bo Li , Ya-ping Mo","doi":"10.1016/S1006-706X(17)30147-4","DOIUrl":"10.1016/S1006-706X(17)30147-4","url":null,"abstract":"<div><h3>Abstract</h3><p>The sintering performance of three typical specular hematite ores (coarse SO-A, intermediate SO-B and ultrafine SO-C) was compared in an industrial ore blend through pilot-scale sinter pot tests. The effect of particle size of specular hematite ores on their granulation and sintering performance was revealed. Compared with the coarse SO-A fine and ultrafine SO-C concentrate, the intermediate SO-B showed inferior granulation and sintering performance characterized with poorer bed permeability and productivity, lower sinter strength and higher fuel rates. A new material preparation method was hence proposed and verified at both pilot and industrial scales. The proposed method by mixing SO-B with a high amount of goethite-type iron ore fines was found to be an effective way in improving the granulation and assimilative characteristics of ore blend comprising 31% intermediate SO-B, leading to improved sinter productivity and lowered fuel rates. The metallurgical properties and microstructure of sinters were also investigated. The sinters obtained through the proposed preparation method were generally stronger and more reducible on account of better sinter structure with more relict hematite ultimately connected with needle-like silico-ferrite of calcium and aluminum and lower porosity.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 1007-1015"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30147-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86544641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 4

Effects of Al contents on microstructure and properties of hot-dip Zn-Al alloy coatings on hydrogen reduced hot-rolled steel without acid pickling Al含量对无酸洗氢还原热轧钢热浸锌铝合金涂层组织和性能的影响

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30150-4

Zhi-feng Li , Yong-quan He , Guang-ming Gao , Jun-jian Tang , Xiang-jun Zhang , Zhen-yu Liu

{"title":"Effects of Al contents on microstructure and properties of hot-dip Zn-Al alloy coatings on hydrogen reduced hot-rolled steel without acid pickling","authors":"Zhi-feng Li , Yong-quan He , Guang-ming Gao , Jun-jian Tang , Xiang-jun Zhang , Zhen-yu Liu","doi":"10.1016/S1006-706X(17)30150-4","DOIUrl":"10.1016/S1006-706X(17)30150-4","url":null,"abstract":"<div><h3>Abstract</h3><p>A new hot-dip galvanizing method was employed on hot-rolled low carbon steel. The effects of Al contents on microstructure, micro-hardness and corrosion resistance of Zn-Al alloy coatings were systematically investigated. Phase composition, microstructure and element distribution in Zn-Al alloy coatings were analyzed using X-ray diffraction (XRD) and electron probe micro analysis (EPMA), respectively. It is found that Al content (0. 6–6. 0 wt. %) in galvanizing zinc affects surface quality and adhesion between coatings and matrix in the newly developed method. In addition, with increasing Al content, micro-hardness significantly increased due to the increase in Zn-Al eutectoid phases. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) also revealed that increase in Al plays a noticeable role in improving the corrosion resistance of Zn-Al alloy coatings.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 1032-1040"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30150-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89776082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 14

Effect of cellular recrystallization on tensile properties of a nickel-based single crystal superalloy containing Re and Ru 细胞再结晶对含Re、Ru镍基单晶高温合金拉伸性能的影响

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30153-X

Zhen-xue Shi, Shi-zhong Liu, Xiao-dai Yue, Li-jie Hu, Wan-peng Yang, Xiao-guang Wang, Jia-rong Li

{"title":"Effect of cellular recrystallization on tensile properties of a nickel-based single crystal superalloy containing Re and Ru","authors":"Zhen-xue Shi, Shi-zhong Liu, Xiao-dai Yue, Li-jie Hu, Wan-peng Yang, Xiao-guang Wang, Jia-rong Li","doi":"10.1016/S1006-706X(17)30153-X","DOIUrl":"10.1016/S1006-706X(17)30153-X","url":null,"abstract":"<div><h3>Abstract</h3><p>A nickel-based single crystal superalloy containing Re and Ru was cast in a directional solidification furnace. The single crystal specimens after standard heat treatment were grit blasted with different pressures and then heat treated at 1100 °C for 4 h under vacuum condition. The evolution of recrystallized microstructure and its effect on the tensile properties at 850 and 980 °C were investigated. After heat treatment, the cellular microstructure was observed, and the thickness of the cellular recrystallization zone increases with the increase in grit blasting pressure. The appearance of the cellular structure undermines the tensile properties. Both the tensile strength and elongation decrease with increasing the thickness of the cellular structure. The recrystallized grain boundaries can act as the channels for the crack initiation and propagation during tensile test. The low bearing capacity of recrystallized layers and the local stress concentration resulting from the notch effect of cracking were the main reasons for the decrease of tensile properties.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 1059-1064"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30153-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81242153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 5

Interfacial microstructure and mechanical properties of diffusion-bonded joints of titanium TC4 (Ti-6Al-4V) and Kovar (Fe-29Ni-17Co) alloys 钛合金TC4 (Ti-6Al-4V)与Kovar (Fe-29Ni-17Co)扩散焊接头的界面组织与力学性能

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30149-8

Ting-feng Song , Xiao-song Jiang , Zhen-yi Shao , De-feng Mo , De-gui Zhu , Min-hao Zhu , Christina H. Young , Zhi-ping Luo

{"title":"Interfacial microstructure and mechanical properties of diffusion-bonded joints of titanium TC4 (Ti-6Al-4V) and Kovar (Fe-29Ni-17Co) alloys","authors":"Ting-feng Song , Xiao-song Jiang , Zhen-yi Shao , De-feng Mo , De-gui Zhu , Min-hao Zhu , Christina H. Young , Zhi-ping Luo","doi":"10.1016/S1006-706X(17)30149-8","DOIUrl":"10.1016/S1006-706X(17)30149-8","url":null,"abstract":"<div><h3>Abstract</h3><p>Diffusion bonding is a near net shape forming process that can join dissimilar materials through atomic diffusion under a high pressure at a high temperature. Titanium alloy TC4 (Ti-6Al-4V) and 4J29 Kovar alloy (Fe-29Ni-17Co) were diffusely bonded by a vacuum hot-press sintering process in the temperature range of 700–850 °C and bonding time of 120 min, under a pressure of 34. 66 MPa. Interfacial microstructures and intermetallic compounds of the diffusion-bonded joints were characterized by optical microscopy, scanning electron microscopy, X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The elemental diffusion across the interface was revealed by electron probe microanalysis. Mechanical properties of joints were investigated by micro Vickers hardness and tensile strength. Results of EDS and XRD indicated that (Fe, Co, Ni)-Ti, TiNi, Ti<sub>2</sub>Ni, TiNi<sub>2</sub>, Fe<sub>2</sub>Ti, Ti<sub>17</sub>Mn<sub>3</sub> and Al<sub>6</sub> Ti<sub>19</sub> were formed at the interface. When the bonding temperature was raised from 700 to 850 °C, the voids of interface were reduced and intermetallic layers were widened. Maximum tensile strength of joints at 53. 5 MPa was recorded by the sintering process at 850 °C for 120 min. Fracture surface of the joint indicated brittle nature, and failure took place through interface of intermetallic compounds. Based on the mechanical properties and microstructure of the diffusion-bonded joints, diffusion mechanisms between Ti-6Al-4V titanium and Fe-29Ni-17Co Kovar alloys were analyzed in terms of elemental diffusion, nucleation and growth of grains, plastic deformation and formation of intermetallic compounds near the interface.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 1023-1031"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30149-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86098234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 22

Non-isothermal study of gasification process of coal char and biomass char in CO2 condition CO2条件下煤焦和生物质焦气化过程的非等温研究

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-10-01 DOI: 10.1016/S1006-706X(17)30144-9

Tao Xu , Guang-wei Wang , Jian-liang Zhang , Teng-fei Song , Run-sheng Xu

{"title":"Non-isothermal study of gasification process of coal char and biomass char in CO2 condition","authors":"Tao Xu , Guang-wei Wang , Jian-liang Zhang , Teng-fei Song , Run-sheng Xu","doi":"10.1016/S1006-706X(17)30144-9","DOIUrl":"10.1016/S1006-706X(17)30144-9","url":null,"abstract":"<div><h3>Abstract</h3><p>Non-isothermal method was used to study gasification characteristics of three coal chars and one biomass char. Four chars were made from anthracite coal (A), bituminous coal (B), lignite coal (L), and wood refuse (W), respectively. The gasification process was studied by random pore model (RPM), unreacted core model (URCM) and volumetric model (VM). With an increase in metamorphic grade, the gasification reactivity of coal char decreased, and the gasification reactivity of biomass char was close to that of low metamorphic coal char. With an increase in heating rate, the gasification of all samples moved towards high temperature zone, and the whole gasification time decreased. It was concluded from kinetics analysis that the above-mentioned three models could be used to describe the gasification process of coal char, and the RPM fitted the best among the three models. In the RPM, the activation energies of gasification were 193. 9, 225. 3 and 202. 8 kJ/mol for anthracite coal char, bituminous coal char and lignite coal char, respectively. The gasification process of biomass char could be described by the URCM and VM, while the URCM performed better. The activation energy of gasification of wood refuse char calculated by the URCM was 282. 0 kJ/mol.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 10","pages":"Pages 985-990"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30144-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77320646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 8

Inclusion evolution in 50CrVA spring steel by optimization of refining slag 优化精炼渣对50CrVA弹簧钢夹杂物的影响

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-09-01 DOI: 10.1016/S1006-706X(17)30130-9

Hai-yan Tang, Yong Wang, Guang-hui Wu, Peng Lan, Jia-quan Zhang

{"title":"Inclusion evolution in 50CrVA spring steel by optimization of refining slag","authors":"Hai-yan Tang, Yong Wang, Guang-hui Wu, Peng Lan, Jia-quan Zhang","doi":"10.1016/S1006-706X(17)30130-9","DOIUrl":"10.1016/S1006-706X(17)30130-9","url":null,"abstract":"<div><p>In order to control the CaO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-MgO system inclusions in 50CrVA spring steel in a lower melting temperature region, high temperature equilibrium experiments between steel and slag were performed in the laboratory, under the conditions of the initial slag basicity within 3–7 and the content of Al<sub>2</sub>O<sub>3</sub> between 18–35 mass%, to investigate the formation and evolution of this type of inclusion. The results indicate that the total oxygen content in the steel decreases with the increase of slag basicity and the decrease of Al<sub>2</sub>O<sub>3</sub> content in slags, and CaO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-MgO inclusions tend to deviate from the low melting point region with the increase of Al<sub>2</sub>O<sub>3</sub> content in slags. The most favorable composition for the refining slag is composed of 51–56 mass% CaO, 9–13 mass% SiO<sub>2</sub>, 20–25 mass% Al<sub>2</sub>O<sub>3</sub> and 6 mass% MgO. In this case, the inclusions in 50CrVA spring steel are mostly in the low melting point regions, in which their plasticities are expected to improve during steel rolling. The MgO-based inclusions were observed in the steel matrix and the formation mechanism was theoretically and schematically revealed. It is also found that adding around 11 mass% of MgO into the refining slags is beneficial to reducing the refractory corrosion. Further work should be carried out focusing on the evolution rates of MgO-based inclusions.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 9","pages":"Pages 879-887"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30130-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78619308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 11

Thermal and chemical analysis of massive use of hot briquetted iron inside basic oxygen furnace

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-09-01 DOI: 10.1016/S1006-706X(17)30132-2

Cosmo Di Cecca , Silvia Barella , Carlo Mapelli , Andrea Gruttadauria , Andrea Francesco Ciuffini , Davide Mombelli , Enrico Bondi

{"title":"Thermal and chemical analysis of massive use of hot briquetted iron inside basic oxygen furnace","authors":"Cosmo Di Cecca , Silvia Barella , Carlo Mapelli , Andrea Gruttadauria , Andrea Francesco Ciuffini , Davide Mombelli , Enrico Bondi","doi":"10.1016/S1006-706X(17)30132-2","DOIUrl":"10.1016/S1006-706X(17)30132-2","url":null,"abstract":"<div><p>The integrated steelmaking cycle based on the blast furnace-basic oxygen furnace (BOF) route plays an important role in the production of plain and ultra-low carbon steel, especially for deep drawing operations. BOF steelmaking is based on the conversion of cast iron in steel by impinging oxygen on the metal bath at supersonic speed. In order to avoid the addition of detrimental chemical elements owing to the introduction of uncontrolled scrap and in order to decrease environmental impact caused by the intensive use of coke for the production of cast iron, HBI (hot briquetted iron) can be used as a source of metal and a fraction of cast iron. Forty industrial experimental tests were performed to evaluate the viability of the use of HBI in BOF. The experimental campaign was supported by a thermal prediction model and realized through the estimation of the oxidation enthalpy. Furthermore, the process was thermodynamically analyzed based on oxygen potentials using the off-gas composition and the bath temperature evolution during the conversion as reference data.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 9","pages":"Pages 901-907"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30132-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85521157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 7

Constitutive analysis and optimization on hot working parameters of as-cast high Cr ultra-super-critical rotor steel with columnar grains 铸态高铬超超临界柱状晶转子钢本构分析及热加工参数优化

2区材料科学

Journal of Iron and Steel Research(International) Pub Date : 2017-09-01 DOI: 10.1016/S1006-706X(17)30134-6

Zong-ye Ding , Di Zhang , Qiao-dan Hu , Long Zeng , Jian-guo Li

{"title":"Constitutive analysis and optimization on hot working parameters of as-cast high Cr ultra-super-critical rotor steel with columnar grains","authors":"Zong-ye Ding , Di Zhang , Qiao-dan Hu , Long Zeng , Jian-guo Li","doi":"10.1016/S1006-706X(17)30134-6","DOIUrl":"10.1016/S1006-706X(17)30134-6","url":null,"abstract":"<div><p>Isothermal hot compression tests on the as-cast high-Cr ultra-super-critical rotor steel with columnar grains were carried out in the temperature range from 1223 to 1523 K and at strain rates from 0.001 to 1 s<sup>–1</sup>. The compression direction was parallel to the longitudinal direction of columnar grains. The constitutive equation based on Arrhenius model was presented, and the processing maps based on the dynamic material model were developed, correlating with microstructure observation. The main softening mechanism was dynamic recovery at 1223 K under strain rates from 0.1 to 1 s<sup>–1</sup>, whereas it was dynamic recrystallization under other deformation conditions. The constitutive equation modified by strain compensation reasonably predicted the flow stresses. The processing maps and microstructure evolution mechanism schematic indicated that the optimum hot working parameters lay in the zone defined by the temperature range from 1423 to 1473 K and the strain rate range from 0.001 to 1 s<sup>–1</sup>.</p></div>","PeriodicalId":64470,"journal":{"name":"Journal of Iron and Steel Research(International)","volume":"24 9","pages":"Pages 916-924"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1006-706X(17)30134-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90746641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 6