000203388 001__ 203388
000203388 005__ 20181203023706.0
000203388 0247_ $$2doi$$a10.1179/026708302225002074
000203388 022__ $$a02670836
000203388 037__ $$aARTICLE
000203388 245__ $$aMatrix chemistry optimisation of Al/Altex composites preserving both fibres and matrix alloy integrity
000203388 269__ $$a2002
000203388 260__ $$c2002
000203388 336__ $$aJournal Articles
000203388 520__ $$aThe mechanical properties of continuous fibre reinforced metals (CFRMs) are known to be very sensitive to the selection and composition of the metallic matrix; for aluminium based CFRMs, commercial alloys are not suitable for this purpose. In the present study, the chemical composition of the matrix of unidirectionally Altex fibre reinforced aluminium composites was adjusted to meet the requirements previously established for a maximum exploitation of the fibre strengthening potential in CFRMs, particularly accounting for the peculiarities of the aluminosilicate Altex fibre and of the squeeze casting process. It was found that a matrix made from high purity elements based on the ternary Al - Zn - Mg system confers the best tensile strength properties to the CFRM, provided the Zn and Mg additions are tightly controlled to prevent the formation of interfacial intermetallic compounds during processing. The optimum composition was shown to be Al - 6Zn - (0·3 - 0·6)Mg (wt-%); in this case Zn traps the Mg which leads to the formation of fine matrix precipitates indentified as Zn2Mg (η′ phase), thus preventing a deleterious reaction of Mg at the fibre/matrix interface. The resulting composite material (fibre volume fraction ∼54%) does not require additional heat treatment after casting and yields a tensile strength up to 1116 and 257 MPa in the axial and transverse directions respectively. © 2002 IoM Communications Ltd.
000203388 6531_ $$aalloy
000203388 6531_ $$aAluminum
000203388 6531_ $$aaluminum derivative
000203388 6531_ $$achemical composition
000203388 6531_ $$acomposite material
000203388 6531_ $$aconference paper
000203388 6531_ $$aHeat treatment
000203388 6531_ $$amaterials testing
000203388 6531_ $$amechanics
000203388 6531_ $$aPrecipitation
000203388 6531_ $$aTensile strength
000203388 6531_ $$aZinc
000203388 700__ $$aVaucher, S.
000203388 700__ $$aBeffort, O.
000203388 700__ $$aLong, S.
000203388 700__ $$0248450$$g112215$$aCayron, C.
000203388 700__ $$aBuffat, P.$$g104664$$0240619
000203388 773__ $$j18$$tMaterials Science and Technology$$q495-500
000203388 909C0 $$xU12903$$0252516$$pLMTM
000203388 909C0 $$pCIME$$xU10192$$0252025
000203388 909CO $$pSB$$pSTI$$particle$$ooai:infoscience.tind.io:203388
000203388 937__ $$aEPFL-ARTICLE-203388
000203388 970__ $$a742/CIME
000203388 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000203388 980__ $$aARTICLE