The thermal expansion coefficient of Al3Sc and Al3(Sc0:75X0:25), where X is Ti, Y, Zr or Hf, was measured by dilatometry between 25 and 1000 C. The measured value, ð16 1Þ 10 6 K , is constant between 25 and 900 C and insensitive to alloying element. Good agreement is found with a literature value determined from first-principle cal-

2014 The effect of 03B3-rays on the structural relaxation of glassy selenium near the glass transition has been studied by dilatometry. We show that under irradiation the evolution time scale shifts about one decade. J. Physique LETTRES 42 (1981) L-501-L-502 . Classification Physics Abstracts 61.40D 64.70E 61.80E 15 NOVEMBRE 1981,

Abstract The influence of inorganic minerals (colemanite and nepheline syenite) as additives for sustainable clay brick manufacture has been examined. Each additive was added at 4 wt% to 96 samples were fired 950 °C 1040 then compared with 100% clay. Multiple analytical techniques (X-ray fluorescence, dilatometry, boiling water absorption, volumetric shrinkage, mercury porosimetry) used analysi...

cryogenic treatment can be used as a supplemental treatment that is performed on some tool steels between quenching and tempering as an effective method for decreasing retained austenite and increasing wear resistance. in this research, the effect of deep cryogenic treatment (dct) on dimensional stability and mechanical properties of 80crmo12 5 tool steel was investigated. the martensitic trans...

Zirconia ZrO 2 is one of the most important modern materials, but its use faces problem complex polymorphism. It generally accepted that, under normal conditions, it exists in monoclinic form P2_1/c (N 14), which undergoes an extended martensitic transformation into tetragonal P4_2/nmc 137) when heated above 1000 o C. However, group-theoretic analysis forbids a direct transition between these s...