Metallurgy; an introduction to the study of physical metallurgy . te against the use ofaluminium as a deoxidising agent for alloys of copper, althoughit is employed for that purpose in the metallurgy of steel. Returning to the binary alloys of copper, those withaluminium remain to be considered. These are of interestin several directions; their constitutional diagram presents anumber of peculiar features, some of which have not yet been 154 STUDY OF PHYSICAL METALLURGY fully elucidated, although the subject has received much studyat the hands of Carpenter and Edwards (), Curry (*), andothers (
Metallurgy; an introduction to the study of physical metallurgy . te against the use ofaluminium as a deoxidising agent for alloys of copper, althoughit is employed for that purpose in the metallurgy of steel. Returning to the binary alloys of copper, those withaluminium remain to be considered. These are of interestin several directions; their constitutional diagram presents anumber of peculiar features, some of which have not yet been 154 STUDY OF PHYSICAL METALLURGY fully elucidated, although the subject has received much studyat the hands of Carpenter and Edwards (), Curry (*), andothers (i). A constitutional diagram based on their resultsis reproduced in Fig. 62, but this must still be regarded assomewhat tentative. From the point of view of practicalapplication the alloys at the copper end of the series, con-taining up to 10 per cent, of aluminium, are of considerableinterest, both on account of their valuable mechanical propertiesand also on account of their marked powers of resistingcorrosion. Certain difficulties which have been experienced. S*Eutect. 6* Eutect. 100 30 80 70 SO SO 40 30 20 10 0%CiCu Composition. Al. Fig. 62,—Constitutional Diagram (tentative) of tlieAluminium-Copper Alloys. in their use and working are likely to be overcome when theiradvantages are fully reahsed. At the other end of the seriesis a group of hght alloys consisting principally of aluminium,but containing up to 4 or 5 per cent, of copper, which are ofinterest, not so much for their own sake, as on account of animportant alloy which is derived from them. This alloy,known by the trade name of Duralumin, wiU be referred toagain in connection with the ternary system manganese-aluminium-copper. At the other end of the series we will again confine our attentionto the alloys containing less than 10 per cent, of to an aluminium content of slightly more than 7 per cent. TYPICAL ALLOY SYSTEMS 155 the alloys are Bimple solid solutions consisting entirely of thea phase, whic
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmetals, bookyear1922
