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We welcome SF2M 我们欢迎SF2M
Zeitschrift Fur Metallkunde Pub Date : 2006-11-01 DOI: 10.3139/146.061101
M. Rühle
{"title":"We welcome SF2M","authors":"M. Rühle","doi":"10.3139/146.061101","DOIUrl":"https://doi.org/10.3139/146.061101","url":null,"abstract":"","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116447524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on susceptibility of Al - Si alloy castings to surface refinement with TIG arc Al - Si合金铸件TIG电弧表面细化敏感性的研究
Zeitschrift Fur Metallkunde Pub Date : 2005-12-01 DOI: 10.3139/146.101190
A. W. Orłowicz, M. Mróz
{"title":"Study on susceptibility of Al - Si alloy castings to surface refinement with TIG arc","authors":"A. W. Orłowicz, M. Mróz","doi":"10.3139/146.101190","DOIUrl":"https://doi.org/10.3139/146.101190","url":null,"abstract":"Abstract Surface fusions were performed by GTAW (Gas Tungsten Arc Welding) surfacing process on plate castings of Al–7Si–Mg alloy with electric arc travel speeds from 200 to 800 mm/min in argon atmosphere. Their geometry and values of structural parameters λ were measured. Microhardness, frictional wear intensity and the fatigue strength of the alloy surface, refined through rapid solidification, have been investigated. Extensive calorimetric measurements of the net heat input for the gas tungsten arc welding process have been conducted. Arc and melting efficiencies were evaluated. A stepwise regression method was used to develop relationships between GTAW process parameters and energy transfer efficiency, as well as geometry, structure and hardness.","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133639180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Effect of the W—W contiguity on conductivity of W—Cu composite using the Voronoi diagram 利用Voronoi图研究W-W连续度对W-Cu复合材料电导率的影响
Zeitschrift Fur Metallkunde Pub Date : 2005-12-01 DOI: 10.3139/146.101028
Young Jung Lee, Dae-gun Kim, G. Kim, Deok-Soo Kim, Y. Kim
{"title":"Effect of the W—W contiguity on conductivity of W—Cu composite using the Voronoi diagram","authors":"Young Jung Lee, Dae-gun Kim, G. Kim, Deok-Soo Kim, Y. Kim","doi":"10.3139/146.101028","DOIUrl":"https://doi.org/10.3139/146.101028","url":null,"abstract":"Abstract W-15wt.% Cu nanocomposite powder samples were fabricated by ball-milling and subsequent hydrogen-reduction. The powder samples were heated to 1200 °C at 5 and 20 °C min−1 and sintered for 1 h to obtain different sintered microstructures. The homogeneity of the sintered microstructures was evaluated by the standard deviation of the Vickers hardness. The W—W contiguity was calculated by using Voronoi diagrams. The sintered microstructure in case of the 20 °C min−1 sample was more homogeneous and had lower W—W contiguity than the 5 °C min−1 sample. The microstructural homogeneity was directly related to the W—W contiguity. Thermal conductivity of the 20 °C min−1 sample was about 5 % higher than the thermal conductivity of the 5 °C min−1 sample. This indicates that the thermal conductivity is affected by the W—W contiguity resulting from the homogeneity of the sintered microstructure.","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125069732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Retrogression, reaging, and mechanical behaviour of a 1441 Al - Li - Cu - Mg - Zr alloy 1441 Al - Li - Cu - Mg - Zr合金的退化、时效和力学行为
Zeitschrift Fur Metallkunde Pub Date : 2005-12-01 DOI: 10.3139/146.101193
K. Ghosh, K. Das, U. Chatterjee
{"title":"Retrogression, reaging, and mechanical behaviour of a 1441 Al - Li - Cu - Mg - Zr alloy","authors":"K. Ghosh, K. Das, U. Chatterjee","doi":"10.3139/146.101193","DOIUrl":"https://doi.org/10.3139/146.101193","url":null,"abstract":"Abstract A 1441 Al–Li–Cu–Mg–Zr alloy was subjected to retrogression treatment and the retrogressed states were immediately reaged to various tempers. Hardness measurement, tensile testing, and SEM fractography have been carried out to conventional peak-aged, retrogressed, retrogressed and reaged (RRA), and over-aged tempers of the alloy. Retrogression treatment applied to peak-aged tempered alloys resulted in a decrease in hardness and tensile strength, an increase of ductility, and a serration phenomenon in the plastic region. These are primarily due to the dissolution of matrix strengthening δ' precipitates into solid solution upon retrogression treatment. Retrogressed states have been reaged to various under-, peak-, and over-aged tempers. Reaging the retrogressed state to peak-aged temper has resulted in attaining the original peak-aged strength and ductility value. SEM fractography study has been carried out and fracture surfaces exhibited predominantly intergranular fracture in presence of few dimpl...","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128069681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Manifestations of dynamic strain ageing in 2090 Al-Li alloy 2090 Al-Li合金动态应变时效表现
Zeitschrift Fur Metallkunde Pub Date : 2005-12-01 DOI: 10.3139/146.101189
N. Ilić, M. Jovanović, V. Radmilović, Ð. Drobnjak
{"title":"Manifestations of dynamic strain ageing in 2090 Al-Li alloy","authors":"N. Ilić, M. Jovanović, V. Radmilović, Ð. Drobnjak","doi":"10.3139/146.101189","DOIUrl":"https://doi.org/10.3139/146.101189","url":null,"abstract":"Abstract The manifestations of dynamic strain ageing in a commercial 2090 Al–Li alloy were investigated in a wide range of temperatures (–40 to 100°C) and strain rates (4.16 × 10–5 to 4.16 × 10–3 s–1). Serrated yielding, as a macroscopic manifestation of dynamic strain ageing, occurs under all testing conditions. Negative strain-rate sensitivity of the flow stress is also observed. Temperature rise and strain rate reduction cause the increase of the yield strength and the work-hardening rate, as well as the decrease of elongation – the behavior being typical for the range in which C-type serrations appear. These phenomena are related to the dislocation substructure, in which features characteristic for solute atoms blocking of dislocations and Orowan bypassing are observed.","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115378051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Grain refinement of an AZ63B magnesium alloy by an Al - 1C master alloy Al - 1C中间合金对AZ63B镁合金晶粒细化的影响
Zeitschrift Fur Metallkunde Pub Date : 2005-12-01 DOI: 10.3139/146.101191
P. Yichuan, Liu Xiangfa, Y. Hua
{"title":"Grain refinement of an AZ63B magnesium alloy by an Al - 1C master alloy","authors":"P. Yichuan, Liu Xiangfa, Y. Hua","doi":"10.3139/146.101191","DOIUrl":"https://doi.org/10.3139/146.101191","url":null,"abstract":"In order to develop a refiner of Mg – Al alloys, an Al – 1C (in wt.%) master alloy was synthesized using a casting method. The microstructure and grain-refining performance of the Al – 1C master alloy were investigated using X-ray diffraction (XRD), electron probe microanalysis (EPMA) and a grain-refining test. The microstructure of the Al – 1C master alloy is composed of α-Al solid solution, Al4C3 particles, and graphite phases. After grain refinement of AZ63B alloy by the Al – 1C master alloy, the mean grain size reached a limit when 2 wt.% Al – C master alloy was added at 800 °C and held for 20 min in the melt before casting. The minimum mean grain size is approximately 48 lm at the one-half radius of the ingot and is about 17 % of that of the unrefined alloy. The Al – 1C master alloy results in better grain refinement than C2Cl6 and MgCO3 carbon-containing refiners.","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128332563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Experimental investigation and thermodynamic calculation in the Al-Be-Si ternary system Al-Be-Si三元体系的实验研究与热力学计算
Zeitschrift Fur Metallkunde Pub Date : 2005-11-01 DOI: 10.3139/146.101179
Zhu Pan, Yong Du, Bai-yun Huang
{"title":"Experimental investigation and thermodynamic calculation in the Al-Be-Si ternary system","authors":"Zhu Pan, Yong Du, Bai-yun Huang","doi":"10.3139/146.101179","DOIUrl":"https://doi.org/10.3139/146.101179","url":null,"abstract":"Abstract A thermodynamic optimization for the Be–Si system has been performed using the CALPHAD (CALculation of PHAse Diagrams) technique applied to newly measured phase diagram data. The description for this binary system is then combined with the thermodynamic parameters in the Al –Be and Al –Si systems to synthesize a thermodynamic description for the Al –Be –Si ternary system. To verify the reliability of the extrapolated ternary phase diagrams, 11 decisive ternary alloys are prepared by are melting Al, Be and Si pieces and annealing at 530 °C for 8 days. Water-quenched samples are analyzed using differential thermal analysis (DTA), X-ray diffraction (XRD), optical microscopy, and scanning electron microscopy with energy dispersive X-ray (SEM/EDX) techniques. The calculated isopleths at 94 wt.% Al, 88 wt.% Al, 50 at.% Al, and 2 wt.% Be are compared with the experimental data from the present work and the literature. The comparisons show that no ternary interaction parameter is needed for the thermodyn...","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"90 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113992202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Interfacial reaction between Cu and Ti2SnC during processing of Cu-Ti2SnC composite Cu-Ti2SnC复合材料制备过程中Cu与Ti2SnC的界面反应
Zeitschrift Fur Metallkunde Pub Date : 2005-11-01 DOI: 10.3139/146.101181
Jinyi Wu, Yanchun Zhou, Jingyang Wang, Wei Wang, Chengke Yan
{"title":"Interfacial reaction between Cu and Ti2SnC during processing of Cu-Ti2SnC composite","authors":"Jinyi Wu, Yanchun Zhou, Jingyang Wang, Wei Wang, Chengke Yan","doi":"10.3139/146.101181","DOIUrl":"https://doi.org/10.3139/146.101181","url":null,"abstract":"Interfacial reaction between Cu and Ti2SnC during the processing of Cu - Ti2SnC composite was investigated by using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. It is shown that the reaction is closely related to the reaction temperature, reaction time, and relative ratio of Cu and Ti2SnC. The reacting products are Cu(Sn) solid solution and TiCx, and the transporting process during interfacial reaction is described. The interfacial reaction products are further confirmed by measuring the hardness across the interface using nanoindentation test. It is shown that the reaction is controlled by the de-intercalation of Sn from Ti2SnC to form Cu(Sn) solid solution and TiCx, and crystallographic relations of [011] TiCx // [010] Ti2SnC and (111) TiCx // (001) Ti2SnC were observed at the interface. The effect of interfacial reaction on the mechanical and electrical properties of the composite is also discussed.","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"382 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132173906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Effects of Heat Treatment on the Lubricated Sliding Wear Behaviour of Zinc–Based Alloy Containing Nickel under Varying Test Conditions 热处理对含镍锌基合金润滑滑动磨损性能的影响
Zeitschrift Fur Metallkunde Pub Date : 2005-11-01 DOI: 10.3139/146.101182
B. Prasad
{"title":"Effects of Heat Treatment on the Lubricated Sliding Wear Behaviour of Zinc–Based Alloy Containing Nickel under Varying Test Conditions","authors":"B. Prasad","doi":"10.3139/146.101182","DOIUrl":"https://doi.org/10.3139/146.101182","url":null,"abstract":"Abstract This investigation presents the observations made pertaining to the lubricated slading wear response of a zinc-based alloy containing nickel over a range of applied pressures and slading speeds. Properties studied were wear rate and fractional heating. The varying wear response of the samples under different material and test conditions has been substantiated through the features of wear surfaces, subsurface regions, and debris. The role of various microconstituents in the material and their specific features have been correlated with the observed wear behaviour of the alloy in different material and test conditions. The wear rate and fractional heating increased with pressure and speed. The data plots in general comprised initially low slope followed by a higher slope at larger applied pressures. Heat-treated samples performed better than the as-cast one except at the maximum sliding speed; a reverse trend was noted in the latter case. The studq suggests the benefits of heat treatment in terms o...","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116717418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Thermodynamic assessment of the Ca - Sn system Ca - Sn体系的热力学评价
Zeitschrift Fur Metallkunde Pub Date : 2005-11-01 DOI: 10.3139/146.101180
Y. Cartigny, J. Fiorani, A. Maitre, M. Vilasi
{"title":"Thermodynamic assessment of the Ca - Sn system","authors":"Y. Cartigny, J. Fiorani, A. Maitre, M. Vilasi","doi":"10.3139/146.101180","DOIUrl":"https://doi.org/10.3139/146.101180","url":null,"abstract":"Abstract Thermodynamic modelling of the Ca–Sn binary system was carried out. The thermodynamic parameters related to this system were determined from experimental phase diagram and thermodynamic information available in the literature. In this system the liquid phase was modelled by the association model with the “Ca2Sn” associated complex. This consideration permits to well restore experimental values. A set of thermodynamic interaction parameters, the calculated phase diagram as well as the comparison with experimental data are presented.","PeriodicalId":301412,"journal":{"name":"Zeitschrift Fur Metallkunde","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116996321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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