546 C. H. Mathewson — Metallographic Description 



Fig. 2. 96°/= Cu 



X 



35 



30 



25 



20 



10* 



a 



CD 



35 



«« 30 



tD 



a 



25 



-3 20 



a 



15 



(a), 



.700° C 



s ast 













































i 



(b) 



775° C 



Jast 





















850° 



fcrs 























Cast 











700° 



Homog. 

























4 



850° 



J-forrK 



>gN> 







L__77sj= 



J^oniog. 













/75 ° Kecryst 







< 



























J 



Fig. 3. 94 % Cu 



(a) 



700° C 



/ast 





































































(b), 



775° ( 



Dast 

























850° 



Cast' 



fc) , 



,Zoo°_H 



, 7 



OnTogr 



















850° 



Homog< 









rnog. 





775° 



Recrv 



R+ ~~ 















































1 



Fig.4. 92% Cu. 



30 



25 



20 



10 



























(a). 



i700° C 



:ast 













































(b) 



775° C 

 * 



;ast 





















850° 

 Cast ' 



£) 



fc=^£i!! 



700° H 

 Home 



omog. 





775° F 



■ecrys 



t. 









850° y 



fomog. 































■' * 

























15 20 



30 



60 



Time in minutes. 



Growth of grain on annealing after 25$ reduction by cold-working. 



