Transactions of Nonferrous Metals Society of China最新文献_第4页

Microstructure evolution of K439B Ni-based superalloy casting with varying cross-sections by experiments and simulations 通过实验和模拟研究不同截面 K439B 镍基超级合金铸件的显微组织演变

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66742-7

Da-shan SUI , De-peng ZHOU , Yang LIU , Yu SHAN , An-ping DONG

{"title":"Microstructure evolution of K439B Ni-based superalloy casting with varying cross-sections by experiments and simulations","authors":"Da-shan SUI , De-peng ZHOU , Yang LIU , Yu SHAN , An-ping DONG","doi":"10.1016/S1003-6326(24)66742-7","DOIUrl":"10.1016/S1003-6326(24)66742-7","url":null,"abstract":"<div><div>Casting experiments and macro-micro numerical simulations were conducted to examine the microstructure characteristics of K439B nickel-based superalloy casting with varying cross-sections during the gravity investment casting process. Firstly, microstructure analysis was conducted on the casting using scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). Subsequently, calculation of the phase diagram and differential scanning calorimetry (DSC) tests were conducted to determine the macro-micro simulation parameters of the K439B alloy, and the cellular automaton finite element (CAFE) method was employed to develop macro-micro modeling of K439B nickel-based superalloy casting with varying cross-sections. The experimental results revealed that the ratio of the average grain area increased from the edge to the center of the sections as the ratio of the cross-sectional area increased. The simulation results indicated that the average grain area increased from 0.885 to 0.956 mm<sup>2</sup> as the ratio of the cross-sections increased from 6꞉1 to 12꞉1. The experiment and simulation results showed that the grain size became more heterogeneous and the grain shape became more irregular with an increase in the ratio of the cross-sectional area of the casting. CAFE modeling was an effective method to simulate the microstructure evolution of the K439B alloy and ensure the accuracy of the simulation.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1182-1196"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 processing history on microstructure, mechanical properties, and electrical conductivity of Cu−0.7Mg alloy 加工历史对Cu−0.7Mg合金组织、力学性能和电导率的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66743-9

Alireza KALHOR , Kinga RODAK , Marek TKOCZ , Bartosz CHMIELA , Ivo SCHINDLER , Łukasz POLOCZEK , Krzysztof RADWAŃSKI , Hamed MIRZADEH , Marian KAMPIK

{"title":"Influence of processing history on microstructure, mechanical properties, and electrical conductivity of Cu−0.7Mg alloy","authors":"Alireza KALHOR , Kinga RODAK , Marek TKOCZ , Bartosz CHMIELA , Ivo SCHINDLER , Łukasz POLOCZEK , Krzysztof RADWAŃSKI , Hamed MIRZADEH , Marian KAMPIK","doi":"10.1016/S1003-6326(24)66743-9","DOIUrl":"10.1016/S1003-6326(24)66743-9","url":null,"abstract":"<div><div>The effects of forward extrusion as well as extrusion combined with reversible torsion (KoBo extrusion), followed by additional deformation via the MaxStrain module of the Gleeble thermomechanical simulator, on the microstructure, mechanical properties, and electrical conductivity of a Cu−0.7Mg (wt.%) alloy, were investigated. The simulation results highlighted the critical influence of processing history on determining the equivalent strain distribution. The sample subjected to forward extrusion at 400 °C and subsequent MaxStrain processing (FM sample), possessed 76% lower grain size compared to the sample processed solely with MaxStrain (AM sample). Likewise, the KoBo-extruded and MaxStrain-processed sample (KM sample) exhibited 66% smaller grain size compared to the AM sample. Tensile test results revealed that the AM, FM, and KM samples, respectively, possessed 251%, 288%, and 360% higher yield strength, and 95%, 121%, and 169% higher tensile strength compared to the initial annealed alloy, as a result of grain refinement as well as deformation strengthening. Finally, the electrical conductivity measurements revealed that AM, FM, and KM samples, respectively, possessed electrical conductivity values of 37.9, 35.6, and 32.0 MS/m, which, by considering their mechanical properties, makes them eligible to be categorized as high-strength and high-conductivity copper alloys.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1197-1211"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Effects of dissolved oxygen concentrations in Hanks’ solution on corrosion behavior of pure zinc and zinc−copper alloys 溶解氧浓度对纯锌和锌-铜合金腐蚀行为的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66746-4

Xin ZHANG , Lu ZHANG , De-kang ZHANG , Lin-yuan HAN , Jing BAI , Zhi-hai HUANG , Chao GUO , Feng XUE , Paul K. CHU , Cheng-lin CHU

{"title":"Effects of dissolved oxygen concentrations in Hanks’ solution on corrosion behavior of pure zinc and zinc−copper alloys","authors":"Xin ZHANG , Lu ZHANG , De-kang ZHANG , Lin-yuan HAN , Jing BAI , Zhi-hai HUANG , Chao GUO , Feng XUE , Paul K. CHU , Cheng-lin CHU","doi":"10.1016/S1003-6326(24)66746-4","DOIUrl":"10.1016/S1003-6326(24)66746-4","url":null,"abstract":"<div><div>To investigate the influence of oxygen content in a physiological liquid environment on the corrosion behavior of biomedical zinc-based alloys, a simulated bodily fluid environment with varying dissolved oxygen was established in vitro using external oxygen supply equipment. The influence of dissolved oxygen concentration on the corrosion behavior of pure Zn and Zn−Cu alloys was studied with scanning electron microscopy, energy dispersive spectroscopy, Fourier transform infrared spectrometry, and electrochemical analysis. Due to oxygen absorption corrosion, the increase in dissolved oxygen concentration increases the pH value of the solution and promotes the accumulation of corrosion product layer. Compared with the environment without additional oxygen supply, the corrosion rate of the sample under the continuous oxygen supply condition is increased by one order of magnitude. Because the Zn−Cu alloy has micro-galvanic corrosion, its corrosion rate is about 1.5 times that of pure zinc under different dissolved oxygen conditions.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1249-1261"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Microstructure and mechanical properties of selective laser melting Al−Mg−Mn−Sc−Zr alloy annealed at different temperatures 不同温度下选择性激光熔化Al - Mg - Mn - Sc - Zr合金的显微组织和力学性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66733-6

Yao LI , Guo-fu XU , Xiao-yan PENG , Ying DENG , Zhi-min YIN

{"title":"Microstructure and mechanical properties of selective laser melting Al−Mg−Mn−Sc−Zr alloy annealed at different temperatures","authors":"Yao LI , Guo-fu XU , Xiao-yan PENG , Ying DENG , Zhi-min YIN","doi":"10.1016/S1003-6326(24)66733-6","DOIUrl":"10.1016/S1003-6326(24)66733-6","url":null,"abstract":"<div><div>Al−3.51Mg−0.42Mn−0.76Sc−0.40Zr (wt.%) alloy was prepared by selective laser melting (SLM) method. The mechanical properties and microstructure of the alloy after annealing at 300 °C or 325 °C for 6 h were studied. The tensile strength, yield strength and elongation of the SLM alloy were 339 MPa, 213 MPa and 24%, respectively. After annealing at 300 °C for 6 h, the tensile and yield strength of the alloy were increased to 518 MPa and 505 MPa, respectively, and the elongation decreased to 13%. After annealing at 325 °C for 6 h, the yield strength of the alloy was reduced to 483 MPa. The grain size of the alloy after annealing at 300 °C and 325 °C did not grow significantly, but the segregation of Mg element was significantly reduced. Nanoscale Al<sub>3</sub>(Sc,Zr) phase was precipitated from the alloy matrix, and its average size increased with the increase of annealing temperature. Therefore, the strength improvement of the annealed SLM aluminum alloy was mainly attributed to the precipitation strengthening of Al<sub>3</sub>(Sc,Zr), and the strengthening mechanism was mainly dislocation cutting mechanism. When the annealing temperature was too high, the coarsening of Al<sub>3</sub>(Sc,Zr) particles caused the strength to decrease.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1045-1056"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Effect of Ca addition on microstructure and properties of porous Mg−1Zn−1Sn alloy scaffold prepared via 3D printed Ti template-infiltration casting Ca对3D打印Ti模板-渗铸制备多孔Mg−1Zn−1Sn合金支架组织和性能的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66739-7

Lei-ting YU , Hao LIU , Peng-nan JIANG , Shao-yuan LYU , Yun ZHAO , Wei LI , Min-fang CHEN

{"title":"Effect of Ca addition on microstructure and properties of porous Mg−1Zn−1Sn alloy scaffold prepared via 3D printed Ti template-infiltration casting","authors":"Lei-ting YU , Hao LIU , Peng-nan JIANG , Shao-yuan LYU , Yun ZHAO , Wei LI , Min-fang CHEN","doi":"10.1016/S1003-6326(24)66739-7","DOIUrl":"10.1016/S1003-6326(24)66739-7","url":null,"abstract":"<div><div>The Mg−1Zn−1Sn and Mg−1Zn−1Sn−0.2Ca alloy scaffolds were prepared via infiltration casting using 3D-printed Ti templates to achieve complete and accurate control of the pore structure. The results indicate that the actual porosity and pore size of the prepared P model for each pore size are greater than the designed values. The addition of Ca changes the second phase of the alloy from Mg<sub>2</sub>Sn to CaMgSn and refines its microstructure. The compressive yield strength and compressive modulus of the Mg−1Zn−1Sn−0.2Ca alloy scaffold reach 32.61 MPa and 0.23 GPa, respectively. The corrosion current density is measured at 14.64 μA/cm<sup>2</sup>, with an instantaneous corrosion rate of 0.335 mm/a. Both scaffolds exhibit excellent biocompatibility and no cytotoxicity. Additionally, the antibacterial effects of both alloys on <em>E. coli</em> are greater than 97.81%. These results indicate that Mg alloy scaffolds have great potential for clinical applications.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1137-1154"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Mechanism of property enhancement of Cu−Ti alloys via microalloying with Cr and Mg elements Cr和Mg元素微合金化Cu - Ti合金性能增强机理

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66745-2

Huan WEI , Hong-li WEI , Hua-yun DU , Qian WANG , Cai-zhi ZHOU , Ying-hui WEI , Li-feng HOU

{"title":"Mechanism of property enhancement of Cu−Ti alloys via microalloying with Cr and Mg elements","authors":"Huan WEI , Hong-li WEI , Hua-yun DU , Qian WANG , Cai-zhi ZHOU , Ying-hui WEI , Li-feng HOU","doi":"10.1016/S1003-6326(24)66745-2","DOIUrl":"10.1016/S1003-6326(24)66745-2","url":null,"abstract":"<div><div>The effect of adding Cr and Mg on the microstructure and properties of Cu−Ti alloys was examined. Cu−Ti−Cr−Mg alloys were fabricated using vacuum induction melting. The microstructure and phase composition of Cu−Ti−Cr−Mg alloys in different aging states were characterized. Additionally, the hardness and electrical conductivity of the materials were investigated. Results show that the precipitation pattern in Cu−Ti−Cr−Mg alloys resembled that of binary Cu−Ti alloys, with Cr and Ti forming the intermetallic compound of Cr<sub>2</sub>Ti during casting. The introduction of Cr and Mg increased the hardness of the alloy. Increasing the Mg content in the Cu−Ti−Cr−Mg alloy led to grain refinement and fast nucleation of continuous precipitates during the early aging stage. Moreover, the addition of Mg impeded discontinuous precipitate growth by segregating along the precipitate surfaces. Consequently, the Cu−4Ti−0.5Cr−1Mg alloy exhibited limited discontinuous precipitates at the grain boundaries and a gradual decline in hardness during the over-aging period.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1233-1248"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Engineering heterogeneous microstructures for enhanced strength and ductility in air-cooled Al−Mg−Si alloys 提高气冷Al - Mg - Si合金强度和延展性的工程非均相组织

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66731-2

Yi-han GAO , Xin-xin ZHANG , Jing-zhe ZHOU , Peng XU , Zhi-jie XIN , Jun-hua GAO , Yan-hao SHI , You LÜ , Yu-fang ZHAO , Jing-yang LI

引用次数: 0

Preparation of (NH4)2V6O16·1.5H2O nanoribbons and their application in aqueous ammonium-ion batteries （NH4）2V6O16·1.5H2O纳米带的制备及其在水铵离子电池中的应用

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66749-X

Lin XING , Wei ZHOU , Kai-xiong XIANG , Wei-na DENG , Liang CHEN , Hai ZHU , Han CHEN

引用次数: 0

Turbulence numerical simulation of flow characteristics of Laval nozzle top blow jet 拉瓦尔喷嘴顶吹射流流动特性的湍流数值模拟

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66753-1

Ai-liang CHEN , Yao LIU , Zi-biao WANG , Huan-wu ZHAN , Xue-xian JIANG , Feng-long SUN , Jiann-yang HWANG , Xi-jun ZHANG

引用次数: 0

Influence of γʹ volume fraction on creep of Ni-based superalloy through phase-field simulations 相场模拟γ′体积分数对ni基高温合金蠕变的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-04-01 DOI: 10.1016/S1003-6326(24)66741-5

Min YANG, Fan YANG, Jia CHEN, Min GUO, Hai-jun SU, Jun ZHANG

{"title":"Influence of γʹ volume fraction on creep of Ni-based superalloy through phase-field simulations","authors":"Min YANG, Fan YANG, Jia CHEN, Min GUO, Hai-jun SU, Jun ZHANG","doi":"10.1016/S1003-6326(24)66741-5","DOIUrl":"10.1016/S1003-6326(24)66741-5","url":null,"abstract":"<div><div><em>γʹ</em> volume fraction (<em>f</em><sub>v</sub>) plays a critical role in the mechanical properties of Ni-based single-crystal superalloys. A creep phase-field model is utilized to simulate the microstructure evolution and creep performance during creep under different <em>f</em><sub>v</sub> conditions. The influence mechanism of <em>f</em><sub>v</sub> on creep properties is investigated based on the analysis of evolutions of internal stress and strain fields. As <em>f</em><sub>v</sub> increases, the morphology of <em>γʹ</em> rafts changes from discontinuous to continuous, while the morphological change of <em>γ</em> channels is opposite, the inclination of <em>γ</em> channels from the [010] direction to 〈011〉 directions during tertiary creep first decreases and then increases, the creep life first increases and then decreases, and the main distribution of creep damage shifts from <em>γʹ</em> to <em>γʹ</em>/<em>γ</em> interfaces and <em>γ</em> channels. The longest creep life under <em>f</em><sub>v</sub> of 0.65 can be attributed to the stable <em>γʹ</em> raft structure, the lowest stress and strain in <em>γ</em> channels, and the slowest damage accumulation.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 4","pages":"Pages 1168-1181"},"PeriodicalIF":4.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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