THE EFFECT OF PULSED MAGNETIC FIELD ON
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890 402 ~-~ 797 348 8~ 853 448 ~-~ 735 318 8~
Note: Data given in numerators and denominators were obtained respectiveIy before and after application of magnetic field.
Z a p o r o z h ' e P e d a g o g i c a l Institute. T r a n s l a t e d f r o m Metalloveden[e i T e r m i c h e s k a y a O b r a b o t k a Metallov, No. 4, pp. 57-58, A p r i l , 1971.
THE
EFFECT
OF
PULSED
MAGNETIC IN STEEL
FIELD
ON
PHASE
TRANSFORMATIONS
Kh15N5D2T
AT 400-650~ F . D. M i r o s h n i e h e n k o , V. G. K a n i b o l o t s k i i , and A. M. Brynza A. I. Stolyarenko, L. S n e z h n o i , UDC 669.14.018.84:621.787.538.6
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Thus, as the r e s u l t of t h e r m o m a g n e t i c t r e a t m e n t the strength and plasticity increase, the amount of austenite d e c r e a s e s , and the magnetic p r o p e r t i e s change - Bm and B r increasing and Hc decreasing. LITERATURE
1.
CITED
2. 3d E. A. Zavadskii, Fiz. Metal. Metaltoved., 8, No. 4 (1959). F. D. Miroshnichenko and V. L. Snezhnoi, tn: Instrument Cons~uction. Interdepartmental Republic Scientific-Technical Collection, No. 2 [in Russian], Tekhnika, Kiev (1966). X-Ray Diffraction and Physical Metallurgy [in Russian] {Yu.A. Bagaryatskii, editor), Metaliurgizdat, Moscow (1964). V. D. Sadovskii et al., Fiz. Metal. Metal[oved., 24, No. 5 (1967).
(llO},~
Normalization 970~
9
~
-i-i- Y
Temper 400~ 20 r a i n . . . Temper 500~ 20 r a i n . . . Temper 625~ 20 r a i n . . . F i g . 1. D i f f r a c t i o n p e a k s (110)(~ and ( l l l ) T f o r s t e e l Kh15N5D2T tempered under different condit i o n s . 1) 400~ 2) 500~ 3) 625~ 4) 650~ - - ) Without m a g n e t i c field; . . . . ) with m a g n e t i c field. Temper 650~ 20 r a i n . . .
V.
M a r t e n s i t i c s t a i n l e s s s t e e l s of the Khl5N5D2T type, h a r d e n e d by l o w - t e m p e r a t u r e aging, with a good c o m b i n a t i o n of a n t i f r i c t i o n and m e c h a n i c a l p r o p e r t i e s and good w e i d a b i l i t y , a r e used in v a r i o u s b r a n c h e s of i n d u s t r y . This w o r k c o n c e r n s the p h a s e t r a n s f o r m a t i o n s in s t e e l Khl5N5D2T d u r i n g heat t r e a t m e n t with s i m u l t a n e o u s a p p l i c a t i o n of a ' p u l s e d m a g n e t i c field ~100 kOe. The p u l s e d m a g n e t i c field was p r o d u c e d by an app a r a t u s d e s c r i b e d in [1]. A f t e r n o r m a l i z a t i o n at 970~ the f u r n a c e with the s a m p l e s was p l a c e d in a solenoid f o r p u l s e d m a g n e t i z a t i o n . The s a m p l e s w e r e held at 400, 500, 625, and 650~ for 20 m i n with subsequent a p p l i c a t i o n of pulsed m a g n e t i c field (field s t r e n g t h ~100 kOe). The r e s u l t s of m a g n e t i c m e a s u r e m e n t s of the m a g n e t i c c h a r a c t e r i s t i c s and the amount of austenite, d e t e r m i n e d by the d i f f e r e n t i a l m a g n e t i c [2] and x - r a y methods on homologous p a i r s [3] b e f o r e and a f t e r t r e a t m e n t in m a g n e t i c field, a r e given in Table 1. The t h e r m o m a g n e t i c t r e a t m e n t r e s u l t e d in an i n c r e a s e of Bm and B r and d e c r e a s e of Hc. F r o m the change in the i n t e g r a l i n t e n s i t i e s of the d i f f r a c lion p e a k s it follows that the amount o f ~ / - p h a s e d e c r e a s e s as the r e suit of t h e r m o m a g n e t i e t r e a t m e n t (see Fig. 1). The data obtained c o n f o r m with those given in [4]. TABLE 1 Heat treatment 884 357 17 20 18 19 22 17 0 6 5
1971 Consultants Bureau, a division of Plenum Publishing Corporation, 227 West I7th Street, New York, N. Y. 10011. All rights reserved. This article cannot be reproduced for any purpose whatsoever without permission of the publisher. A copy of this article is available from the publisher for $15.00.
