Effect of Stress on Magnetization, 



11 



Tungsten- St eel. 

 T = 3371 gr./mm. 2 ; £ = 13°'7 C. 



H '= 



401. 



H' =10-72. 



H' = 14-53. 



H' =18-39. 



H' = 2240. 



r. 



M* 



r. 



«i. 



- 



M*. 



r 



n*. 



r. 



«i. 



18-4' 

 39-8 

 692 



0-9 



2-2 

 4-9 



12 ' 9 ' 



47-5 

 69-2 



2-2 



7-1 

 15-7 



12-9' 

 39-1 

 69-2 



4-0 

 14-4 

 29-3 



13-8' 

 38-4 

 69-5 



8-9 

 326 

 69-9 



17-6' 

 414 



G9-2 



13-4 

 37-0 

 633 



-03 





01 

















-0-3 







II' = 



30-07 



IT = - 



16-05. 



H'=9S-8. 



IT = 209-0. 



H'=3640. 



r. 



«i- 



r. 



1-3 

 66 

 9-1 



r. 



«». 



T. 



«* 



T. 



* 



12-9' 

 34-8 

 692 



34 

 12-4 



27-2 



134' 



48-4 

 69-2 



14-5' 

 42-7 

 69-2 



02 

 1-5 

 2-3 



13-0' 

 476 



69-2 



o-o 



00 



-o-i 



21-4' 



69-2 



00 

 00 





-0-7 





-0-8 





-10 





-0-3 





-0-2 



The numbers in the last row give the cyclic effect of twist 

 corresponding to the maximum twist. 



The effect o£ the graduated application o£ twist does not 

 sensibly differ from that of applying the maximum twist 

 at once. 



(d) Magnetization under Constant Twist combined with 

 Tensions : (I, H) r ,H. 



The effect of a constant twist on magnetization is very 

 small ; in a small twist, the magnetization slightly increases, 

 but above a moderate twist, it is decreased by twisting. 

 With a moderate twist, curves (81, H) r ,T as deduced from 

 (I, H)r,T have an opposite sign to those deduced from 

 (Bli, t)h,t; but they have the same sign as curves (81 e , H) r ,T 

 obtained from (8I C , t) h ,t. The following tables and the 

 dotted curves in figs. 13, 14, & 15 (PI. II.) will show these 

 chancres of magnetization. 



