Thermal expansion of iron–chromium alloys in the temperature range 4.2–300 K

1982 ◽  
Vol 53 (11) ◽  
pp. 8122-8124 ◽  
Author(s):  
V. E. Rode ◽  
A. I. Lyalin ◽  
S. A. Finkelberg
1981 ◽  
Vol 8 ◽  
Author(s):  
G. Hunger ◽  
H. W. Bergmann ◽  
B. L. Mordike

ABSTRACTIn amorphous iron-chromium alloys magnetic contraction is superimposed on the thermal expansion. Depending on the proportion of antiferromagnetic chromium the resultant coefficient of expansion is either positiv, negative or zero. The chromium content also changes the Curie temperature. Relaxation processes have a marked effect on the thermal expansion. Long term and short term expansion behaviour was compared and discussed. In addition the crystallization behaviour and mechanical properties of the alloys are reported.


2002 ◽  
Vol 43 (12) ◽  
pp. 3065-3071 ◽  
Author(s):  
Yoshiaki Ikarashi ◽  
Toshie Tsuchiya ◽  
Kazuhiro Toyoda ◽  
Equo Kobayashi ◽  
Hisashi Doi ◽  
...  

1976 ◽  
Vol 33 (1) ◽  
pp. 354-367 ◽  
Author(s):  
B. Dubois ◽  
S. A. Rizkallah ◽  
G. Brun ◽  
G. Flamant ◽  
G. Bouquet

2007 ◽  
Vol 539-543 ◽  
pp. 3261-3266 ◽  
Author(s):  
Iulian Radu ◽  
Dong Yang Li

The near-equiatomic TiNi alloy has been demonstrated to possess high wear resistance, which largely benefits from its pseudoelasticity (PE). However, the PE occurs only in a small temperature range, which makes the wear resistance of this alloy unstable as temperature changes, caused by environmental instability or frictional heating. Therefore, enlarging the working temperature of PE could considerably improve this alloy as a novel wear-resistant material. One possible approach is to develop a self-built temperature-dependent internal stress field by taking the advance of the difference in thermal expansion between the pseudoelastic matrix and a reinforcing phase. Such a T-dependent internal stress could adjust the martensitic transformation temperature to respond changes in environmental temperature so that the temperature range of PE could be enlarged, thus leading to a wide temperature range in which the minimum wear loss is retained. Research was conducted to investigate effects of an added second phase having a negative thermal expansion (NTE) coefficient on the wear resistance of a near-equiatomic TiNi alloy. It was demonstrated that the temperature range of this modified material in which the wear loss dropped was enlarged. In addition, the wear resistance of such a TiNi-matrix composite was on one order of magnitude higher than that of unmodified TiNi alloy.


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