The effect of antimony on sintering of silver in the initial stage
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F i g . 6 - - J a o u l t - C r u s s a r d a n a l y s i s of s t r e s s - s t r a i n c u r v e s . Martensite volume fractions vary and m a r t e n s i t e c a r b o n content i s constant a s shown.
1. S. Hayami and T. Furukawa: Microalloying 75 Proceedings, p. 311, Washington, D.C., Oct. 1975. 2. M. S. Rashid: General Motors Research Publication, CMR-2326,Warren,MI, Feb. 1977. 3. G. Tither andM. Lafite: Z Metals, 1975, vol. 27, pp. 15-23. 4. R. G. Davies: Met. Trans. A, 1978, vol. 9A, pp. 41-52. 5. A. R. Marder: Presented at TMS-AIME Fall Meeting, Chicago, IL, 1977. 6. P. J. Vander Arend andJ. M. Rigsbee: Presented at TMS-AIME Fall Meeting, Chicago, IL, 1977. 7. J. Y. Koo and G. Thomas: Met. Trans. A, 1977, vol. 8A, pp. 525-28. 8. R. G. Davies andR. C. Ku: Trans. TMS-AIME, 1966, vol. 236, pp. 1691-96. 9 . W.B. Morrison: Trans. ASM, 1966, vol. 59, pp. 824-46. 10. H. J. Kleemola andM.A. Nieminen: Met. Trans., 1974, vol. 5, pp. 1863-66. 11. S. N. Monteiro andR. E. Reed-Hilh Met. Trans., 1971,vol. 21pp. 2947-49. 12. J. H. Hollomon: Trans. AIME, 1945, vol. 162, pp. 268-90. 13. P. Ludwik: Element der TechnologinchenMechanik, p . 32, Julius Springer, Berlin, 1909o 14. B. Jaoult: J. Mech. Phys. Solids, 1957, vol. 5, pp. 95-114. 15. C. Crussard: Rev. Metall. (Paris), 1953, vol. 10, p p . 697-710.
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The Effect of Antimony on Sintering of Silver in the Initial Stage P. Y. Y.
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F i g . 7 - - J a o u l t - C r u s s a r d a n a l y s i s of s t r e s s - s t r a i n c u r v e s . Martensite c a r b o n content v a r i e s but martensite v o l u m e fraction i s constant a s shown.
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A p r e v i o u s s t u d y by T a k a h a t a e t a l1 g a v e s o m e i n d i c a t i o n that t h e a d d i t i o n of a s o l u t e ( 1 . 1 6 wt p e t Sb) to s p h e r i c a l s i l v e r p o w d e r i n c r e a s e d t h e s h r i n k a g e r a t e a t 800 a n d 8 5 0 ° C i n t h e e a r l y s t a g e o f s i n t e r i n g (up to a b o u t 0 . 5 p c t s h r i n k a g e ) . H o w e v e r , t h e d i f f e r e n c e in s h r i n k a g e b e t w e e n t h e p u r e A g a n d A g - S b p o w d e r s w a s q u i t e s m a l l in t h i s i n i t i a l s t a g e . It was possible, therefore, that this r e s u l t m a y have been p a r t l y a s s o c i a t e d w i t h e x p e r i m e n t a l e r r o r in m e a s u r i n g s h r i n k a g e (about ± 0 . 0 0 1 8 m a x i m u m ) a n d in d e t e r m i n i n g t h e t r u e o r i g i n of the i s o t h e r m a l s h r i n k a g e c u r v e s . It w a s e v i d e n t that f u r t h e r s t u d i e s a t l o w e r t e m p e r a t u r e s w o u l d be r e q u i r e d b e f o r e u n e q u i v o c a l s t a t e m e n t s c o u l d be m a d e r e g a r d i n g t h i s e a r l y s t a g e of sintering. I n t h e p r e s e n t s t u d y , the e f f e c t o f Sb (1.1.
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