Materials Testing最新文献_第10页

Adhesive wear behavior of FeB–FeMn–C coatings produced by GTAW GTAW生产的FeB-FeMn-C涂层的粘着磨损行为

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-30 DOI: 10.1515/mt-2023-0164

M. Yaz

引用次数: 1

Composite disc optimization using hunger games search optimization algorithm 复合光盘优化使用饥饿游戏搜索优化算法

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-29 DOI: 10.1515/mt-2023-0067

Mehmet Kopar, A. Yıldız

引用次数: 4

Effect of impactor nose form on the impact behavior of reinforced composite materials 冲击头形状对增强复合材料冲击性能的影响

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-29 DOI: 10.1515/mt-2022-0409

Sonay Dogan, Y. Arman, Akar Dogan

引用次数: 0

Weldability and mechanical behavior of CMT welded AISI 430 and HARDOX 500 steels CMT焊接AISI 430和HARDOX 500钢的可焊性和力学性能

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-29 DOI: 10.1515/mt-2023-0169

Mustafa Engin Kocadağistan, Oğuzhan Çinar, T. Teker

引用次数: 0

Development of morphology and lattice misfit in modified Ni-base superalloy with Al, Co and Ni additions 添加Al、Co和Ni改性镍基高温合金的形貌和晶格失配的发展

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-28 DOI: 10.1515/mt-2023-0034

N. Saenarjhan, N. Kiatwisarnkij, Witchawet Korthamniwet, G. Lothongkum, T. Rojhirunsakool, E. Nisaratanaporn, P. Horňak, P. Wangyao

{"title":"Development of morphology and lattice misfit in modified Ni-base superalloy with Al, Co and Ni additions","authors":"N. Saenarjhan, N. Kiatwisarnkij, Witchawet Korthamniwet, G. Lothongkum, T. Rojhirunsakool, E. Nisaratanaporn, P. Horňak, P. Wangyao","doi":"10.1515/mt-2023-0034","DOIUrl":"https://doi.org/10.1515/mt-2023-0034","url":null,"abstract":"Abstract This research work studied the effect of aluminium, cobalt and nickel additions in superalloys grade GTD-111 and IN-738 on morphology of gamma prime particles and their lattice misfits after subjected to heat treatment and long-term cyclic exposure by using SEM and XRD. It was found that the particles became more cuboidal in shape after heat treatment in modified GTD-111 and IN-738 alloys. When adding 1 wt% aluminium and 6 wt% nickel, larger negative values of lattice misfit were found at −0.57 % and −0.28 %, respectively. However, 6 wt% cobalt addition reduced the negative value of the lattice misfit to −0.20 % in modified GTD-111 and small positive lattice misfit (+0.08 %) was found in modified IN-738. Also, modified GTD-111 alloy shows more spherical shape of the gamma prime precipitates than those in modified IN-738. After long-term cyclic exposure at 1173 K for 1440 ks, it was found that the particles become more spherical shape comparing to those of heat treated ones. The shape of particles in both modified alloys with 1 wt% aluminium and 6 wt% nickel additions maintained more cuboidal compared to others. Furthermore, the effect of 6 wt% cobalt addition is more pronounced for modified IN-738 than that of modified GTD-111.","PeriodicalId":18231,"journal":{"name":"Materials Testing","volume":"14 1","pages":"1179 - 1189"},"PeriodicalIF":2.5,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90446232","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

Approximation of the stiffness of laminate stacks of electric motors subjected to cyclic loads 循环荷载作用下电机层压板堆刚度的近似计算

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-26 DOI: 10.1515/mt-2022-0382

V. Szabó, D. Feszty, Balázs Pere

引用次数: 0

Effects of Mn and Cu on descaling of hot-rolled 304L stainless steel in HCl and H2O2 mixtures Mn和Cu对HCl和H2O2混合物中热轧304L不锈钢除鳞的影响

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-23 DOI: 10.1515/mt-2023-0072

A. Lothongkum, Boonyapa Benjamalai, Nichit Hongbin, Nipa Prawetpai, Chockanan Tiyawatwitthaya, P. Wanichpongpan, G. Lothongkum

{"title":"Effects of Mn and Cu on descaling of hot-rolled 304L stainless steel in HCl and H2O2 mixtures","authors":"A. Lothongkum, Boonyapa Benjamalai, Nichit Hongbin, Nipa Prawetpai, Chockanan Tiyawatwitthaya, P. Wanichpongpan, G. Lothongkum","doi":"10.1515/mt-2023-0072","DOIUrl":"https://doi.org/10.1515/mt-2023-0072","url":null,"abstract":"Abstract Descaling of stainless-steel black coil is an important step to produce white coil with smooth glossy surface. The AISI 304L black and white coils from a company containing 1.08–1.71Mn and 0.22–0.40Cu (wt%) were used to study the effects of Mn and Cu on descaling rate by potentiodynamic polarization technique at 25 °C. The pickling solutions were 0.5 M HCl and 0.5 M HCl mixed with H2O2 of 0.5, 0.88 and 1.76 M. The polarization curves of black and white coil samples measured in HCl–H2O2 mixture showed no passive range. The descaling rate of black coil oxide scales, and the corrosion potential (Ecorr) increased with H2O2 concentration. Low-Mn sample, that is 1.08%Mn0.23%Cu sample, showed higher descaling rate than high-Mn samples. No effects of Cu content on the descaling rate were observed. For white coil samples, the descaling rates were almost constant, but pitting on surface was observed. Passive films were eliminated. The corrosion potentials of black and white coil samples increased when adding H2O2 in HCl solution indicating an increase in cathodic reaction due to increase in dissolved oxygen. The corrosion potentials of 1.08%Mn0.23%Cu black and white coil samples were lower than those of high-Mn samples corresponding to less Mn oxide.","PeriodicalId":18231,"journal":{"name":"Materials Testing","volume":"65 1","pages":"1167 - 1178"},"PeriodicalIF":2.5,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79839102","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

Innovative prevention of stress corrosion crack propagation in nuclear power pipe welds 核电管焊缝应力腐蚀裂纹扩展的创新预防

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-23 DOI: 10.1515/mt-2023-0153

Xiaofei Kong, X. Wang, B. Lin, Zhiliang Xiong, Xiaoyun Deng, Xiao Li, Yongxin Lu

{"title":"Innovative prevention of stress corrosion crack propagation in nuclear power pipe welds","authors":"Xiaofei Kong, X. Wang, B. Lin, Zhiliang Xiong, Xiaoyun Deng, Xiao Li, Yongxin Lu","doi":"10.1515/mt-2023-0153","DOIUrl":"https://doi.org/10.1515/mt-2023-0153","url":null,"abstract":"Abstract Failure caused by stress corrosion cracking (SCC) is inevitable during the long-term service of nuclear power pipe welds. This is mainly due to the propagation of microcracks in the deposited metal, which seriously affects the operation safety of nuclear power pressure pipes. Overlay welding is practical for pressure pipe repair welding, which can introduce compressive residual stress inside the weld seam. In this work, a diagonal T-pipe joint was fabricated using tungsten inert gas arc welding with ERRS-3 wire, and an overlay weld was also fabricated using tungsten inert gas arc welding with ERRS-3 wire under circumstances of water in the pipe and no water in the pipe. And then the contour method and finite element method were employed to measure and calculate the residual stress distribution in the diagonal T-pipe joint. Both results showed that overlay welding can introduce compressive residual stresses into the pipe joint. The compressive residual stress zone area inside the weld seam with water in the pipe is larger than that without water in the pipe, and the compressive residual stress zone area varies at different positions of the weld seam. This work is expected to promote the application of overlay weld technology in the diagonal T-shaped pipe joint repair and prevent stress corrosion crack propagation of nuclear power pipe welds.","PeriodicalId":18231,"journal":{"name":"Materials Testing","volume":"95 5","pages":"1145 - 1154"},"PeriodicalIF":2.5,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72469632","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

Microstructure development and mechanical behaviour of pure copper processed by the novel TWO-CAP procedure 新型TWO-CAP工艺处理纯铜的微观组织发展和力学行为

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-23 DOI: 10.1515/mt-2023-0011

H. Kaya, M. Uçar, Mehmet Şahbaz, A. Kentli, Kerim Özbeyaz, Serkan Öğüt

{"title":"Microstructure development and mechanical behaviour of pure copper processed by the novel TWO-CAP procedure","authors":"H. Kaya, M. Uçar, Mehmet Şahbaz, A. Kentli, Kerim Özbeyaz, Serkan Öğüt","doi":"10.1515/mt-2023-0011","DOIUrl":"https://doi.org/10.1515/mt-2023-0011","url":null,"abstract":"Abstract In this study, thin-walled open channel angular pressing (TWO-CAP) technique was applied to pure copper specimens as a novel severe plastic deformation (SPD) method. The TWO-CAP process was applied to the specimens up to four passes. After each pass, the microstructural and mechanical characterization of the material was investigated by tensile and hardness tests along with OM, SEM, EDS, TEM and XRD analyses. As a result, a highly increase in the mechanical properties was obtained, in addition satisfactory grain refinement was observed in microstructures. Strength and hardness values were positively affected from the minimizing the grain sizes after TWO-CAP process. Another reason of the improvements in mechanical properties can be explained as the increase in dislocation density. Furthermore, the effect of the TWO-CAP process on the dislocation density of the material has been demonstrated by XRD and TEM analyses in nanoscale. Moreover, the strain equation has been developed analytically and the effect of each pass on strain was calculated. Finally, the effect of the process on the stress-strain properties of the material was examined by the numerical analysis method and the study was verified.","PeriodicalId":18231,"journal":{"name":"Materials Testing","volume":"95 1","pages":"1209 - 1221"},"PeriodicalIF":2.5,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85860941","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 Ti and Nb addition on the microstructure, mechanical, and machinability properties of 316L stainless steel fabricated by powder metallurgy Ti和Nb添加对粉末冶金316L不锈钢显微组织、力学性能和切削性能的影响

IF 2.5 4区材料科学

Materials Testing Pub Date : 2023-06-23 DOI: 10.1515/mt-2022-0358

M. Erden, Fatma Gül Uzun, Mahir Akgün, H. Gökçe

{"title":"Influence of Ti and Nb addition on the microstructure, mechanical, and machinability properties of 316L stainless steel fabricated by powder metallurgy","authors":"M. Erden, Fatma Gül Uzun, Mahir Akgün, H. Gökçe","doi":"10.1515/mt-2022-0358","DOIUrl":"https://doi.org/10.1515/mt-2022-0358","url":null,"abstract":"Abstract In this study, titanium and niobium element powders in determined amounts (0.25 and 0.5 wt%) were added into the 316L stainless steel matrix by means of powder metallurgy (PM) technology, either singly or in pairs, and the desired composition was obtained as a powder mixture. The powders used in the study were cold pressed tensile sample molds prepared in ASTM 8 M standards, unidirectionally cold pressed under 700 MPa compression pressure and formed into blocks. After pressing, the raw strength samples were sintered in an atmosphere-controlled tube furnace at 1325 °C for 2 h in an argon atmosphere. The microstructure and mechanical properties of the produced PM steels were characterized by optical microscope, SEM, EDS, and tensile test. The results showed that the stainless-steel samples with 0.25(Ti–Nb) added composition to 316L stainless steel had the highest yield strength and tensile strengths. However, with the addition of 0.5Ti, 0.5Nb, and 0.5(Ti–Nb) to 316L stainless steel, a decrease was observed in the mechanical properties. Moreover, the MQL machining is better on the machining output such as surface roughness and cutting temperature than dry machining in terms of a sustainable machining process.","PeriodicalId":18231,"journal":{"name":"Materials Testing","volume":"55 1","pages":"1237 - 1253"},"PeriodicalIF":2.5,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78311628","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