Some recollections, early observations of phase transformations-micromorphology
- PDF / 521,404 Bytes
- 4 Pages / 612 x 792 pts (letter) Page_size
- 40 Downloads / 181 Views
Reminiscing, the author briefly mentions some of his early contributions, including i) the X-ray discovery of substitutional solid solutions, ordered solid solutions, and retained austenite; 2) determination of the time for isothermal transformation of austenite in certain carbon steels at a variety of temperatures; and 3) discovery of the looped austenitic field in the s y s t e m , F e - C r . He then r e c o u n t s in g r e a t e r detail his d e m o n s t r a t i o n (1930-34), with E. S. D a v e n p o r t , that the s u p e r i o r i t y of forged a u t o m o t i v e c o m p o n e n t s of q u e n c h e d and t e m p e r e d l o w - a l l o y s t e e l o v e r t h e i r p l a i n c a r b o n s t e e l c o u n t e r p a r t s lay in t h e i r m i c r o s t r u c t u r e : the a l l o y i n g e l e m e n t s d e l a y e d the t r a n s f o r m a t i o n of a u s t e n i t e , e n s u r e d full c o n v e r sion to m a r t e n s i t e , and thus p r o v i d e d adequate h a r d e n a b i l i t y . S E V E R A L weeks ago, I r e c e i v e d a l e t t e r b r i n g i n g the p l e a s i n g and a s t o n i s h i n g i n f o r m a t i o n that s o m e f r i e n d s w e r e c o n t e m p l a t i n g the a s s o c i a t i o n of m y n a m e with a t i m e l y S e m i n a r on P h a s e T r a n s f o r m a t i o n s ha Steels, by way of a p r e s u m a b l y c o n g r a t u l a t o r y r e c o g n i t i o n of my fifty-odd y e a r s of devotion (or should I say, " u n r e m i t t i n g a d d i c t i o n ? ) to M e t a l l u r g i c a l R e s e a r c h , which e n d e a v o r i s now b r i n g i n g m y life to the age of eighty y e a r s . (Whether that a n n i v e r s a r y o c c a s i o n w a r r a n t s c o n g r a t u l a t i o n s , I have l a t e l y s o m e t i m e s thought m a y be open to q u e s t i o n i n g ) . T h i s s u r p r i s i n g news was i n deed h e a r t w a r m i n g , p e r m i t t i n g a s it did, the i n f e r e n c e that, even a f t e r the a d v a n c e s of so m a n y i n t e r v e n i n g y e a r s of b r i l l i a n t and highly r e f i n e d r e s e a r c h , m y e a r l y a t t e m p t s to make s o m e c o n t r i b u t i o n s to the s u b ject of the S e m i n a r had not been wholly forgotten, n a i v e a s they m u s t now be r e g a r d e d . With this p l e a s i n g n e w s , however, t h e r e was i n c l u d e d a n i n v i t a t i o n for m e p e r s o n a l l y to p r e s e n t a p a p e r . That was a shocker! If I could have a t t e n d e d the S e m i n a r in p e r s o n , it would have b e e n a g r e a t s a t i s f a c t i o n to c l a s p the hand of each f r i e n d who had kindly w i s h e d so to d e s i g n a t e the S e m i n a r to r e c o g n i z e s o m e of m y e a r l y r e s e a r c h efforts, and of those who w e r e i n c l i n e d to p r e p a r e c o n t r i b u t i o n s for the m e e t i n g . That c i r c u m s t a n c e , h o w e v e r , could s c a r c e l y j u s t i f y my taking any of the t i m e of the S e m i n a r to speak on a n y s
Data Loading...
