Journal of Light Metals最新文献

Statistical experimental design of Al–Cu–Mg–Si P/M alloys Al–Cu–Mg–Si P/M合金的统计实验设计

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00006-3

B.J Hall, G.B Schaffer

引用次数: 8

Mechanical behavior and microstructure characterization of sinter-forged SiC particle reinforced aluminum matrix composites 烧结锻造SiC颗粒增强铝基复合材料的力学行为和微观结构表征

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00005-1

N Chawla, J.J Williams, R Saha

{"title":"Mechanical behavior and microstructure characterization of sinter-forged SiC particle reinforced aluminum matrix composites","authors":"N Chawla, J.J Williams, R Saha","doi":"10.1016/S1471-5317(03)00005-1","DOIUrl":"https://doi.org/10.1016/S1471-5317(03)00005-1","url":null,"abstract":"<div>A novel, low-cost sinter-forging approach to processing particle reinforced metal matrix composites for high-performance applications was examined. The microstructure of the sinter-forged composites exhibited relatively uniform distribution of SiC particles, which appeared to be somewhat aligned perpendicular to the forging direction. The degree of alignment and interparticle bond strength was not as high as that observed for the extruded composite. The sinter-forged composite exhibited higher Young’s modulus and ultimate tensile strength than the extruded material, but lower strain-to-failure. The higher modulus and strength were attributed to the absence of any significant processing-induced particle fracture, while the lower strain-to-failure was caused by poorer matrix interparticle bonding compared to the extruded material. Fatigue behavior of sinter-forged composites was similar to that of the extruded material. Fe-rich inclusions were extremely detrimental to fatigue life. Cleaner processing, which eliminated the inclusions, enhanced the fatigue life of the sinter-forged composites to levels similar to that of the extruded material.</div>","PeriodicalId":100798,"journal":{"name":"Journal of Light Metals","volume":"2 4","pages":"Pages 215-227"},"PeriodicalIF":0.0,"publicationDate":"2002-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1471-5317(03)00005-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72112962","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: 84

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00021-X

Graham Schaffer

引用次数: 1

Mechanical properties of AlYNi amorphous alloys AlYNi非晶合金的力学性能

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00011-7

M. Gögebakan

{"title":"Mechanical properties of AlYNi amorphous alloys","authors":"M. Gögebakan","doi":"10.1016/S1471-5317(03)00011-7","DOIUrl":"https://doi.org/10.1016/S1471-5317(03)00011-7","url":null,"abstract":"<div>AlYNi amorphous alloys with high mechanical strength and good bending ductility have been produced by rapid solidification technique. Vickers hardness (Hv), Young’s modulus (E) and tensile fracture strength (σf) for the amorphous single phase are in the range 365–385 DPN, 71.5–82.2 GPa and 920–1150 MPA, respectively. The crystallized structure of the amorphous alloys consists of coexistent amorphous and fcc-Al phase with a particle size of 5–25 nm. The hardness and tensile fracture strength of these amorphous alloys containing the nanoscale Al particles increase to 550 DPN and 1450 MPA respectively, annealed at 400–550 K for 30 min. This increase in (Hv) and σf is considered because the defect-free nanoscale fcc-Al particles homogeneously dispersed in the amorphous matrix effectively resist against shear deformation of the amorphous matrix. This paper describes in detail the effects of annealing temperature on microstructure and mechanical properties of AlYNi amorphous alloys.</div>","PeriodicalId":100798,"journal":{"name":"Journal of Light Metals","volume":"2 4","pages":"Pages 271-275"},"PeriodicalIF":0.0,"publicationDate":"2002-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1471-5317(03)00011-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72115745","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: 18

Statistical experimental design of Al-Cu-Mg-Si P/M alloys Al-Cu-Mg-Si P/M合金统计试验设计

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00006-3

B. J. Hall, G. Schaffer

引用次数: 8

An experimental investigation on the assimilation and recovery of strontium–magnesium alloys in A356 melts 锶镁合金在A356熔体中同化与回收的实验研究

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00009-9

S. Argyropoulos, Gordon L.S Chow

引用次数: 5

On the silicon spheroidization in Al–Si alloys 铝硅合金中硅的球化

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00010-5

E Ogris , A Wahlen , H Lüchinger , P.J Uggowitzer

{"title":"On the silicon spheroidization in Al–Si alloys","authors":"E Ogris , A Wahlen , H Lüchinger , P.J Uggowitzer","doi":"10.1016/S1471-5317(03)00010-5","DOIUrl":"https://doi.org/10.1016/S1471-5317(03)00010-5","url":null,"abstract":"<div>It is commonly known that eutectic silicon spheroidizes during a T6 solution heat treatment in Al–Si cast alloys. This spheroidization of the brittle silicon is the main reason for the good fracture elongation values in peak hardened T6 condition. As the silicon spheroidization is known as a side effect of common T6 treatment, there is little known about the influence of sole silicon spheroidization on the mechanical properties. The following paper presents fundamental aspects of the spheroidization process of eutectic silicon in Al–Si cast alloys. It is theoretically as well as experimentally found that the disintegration and spheroidization of well modified eutectic silicon is finished within minutes of exposure to temperatures above 500 °C. The application of this new silicon spheroidization treatment (SST) to thixoformed components results in outstanding fracture elongation values (up to 18%) at good yield strength level (∼230 MPa). FEM simulations of the short high temperature heat treatment confirm a short process time for successful SST even for components with notably variable wall thicknesses.</div>","PeriodicalId":100798,"journal":{"name":"Journal of Light Metals","volume":"2 4","pages":"Pages 263-269"},"PeriodicalIF":0.0,"publicationDate":"2002-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1471-5317(03)00010-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72112960","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: 206

2002 Contents, Author and Subject Index 2002年目录、作者和主题索引

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00028-2

引用次数: 0

Mechanical properties of AlYNi amorphous alloys AlYNi非晶合金的力学性能

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00011-7

M. Gogebakan

引用次数: 18

Effects of lubricants and compacting pressure on the processability and properties of aluminum P/M parts 润滑油和压实压力对铝粉末冶金零件加工性能的影响

Journal of Light Metals Pub Date : 2002-11-01 DOI: 10.1016/S1471-5317(03)00007-5

L. Lefebvre, Y. Thomas, B. White

引用次数: 22