Published July 2004 | Version v1
Journal article Metadata-only

Effect of rapid cooling on the polymorphic transformation in zirconium

Creators

  • 1. Chelyabinskij Filial Inst. Metallurgii UrO RAN, Chelyabinsk (Russian Federation)
  • 2. UrO RAN, Inst. Fiziki Metallov, Ekaterinburg (Russian Federation)
  • 3. Yuzhno-Ural'skij Gosudarstvennyj Univ., Chelyabinsk (Russian Federation)

Description

The effect of cooling rate in a range from 100 to 5 x 105 K/s on the temperature of the onset of a BCC → HCP polymorphic transformation in zirconium is studied. It is shown that in zirconium as well as in many other polymorphic metals (Ti, Fe) three kinetic transformation stages exist which differ in onset temperatures (800; 640 and 520 deg C), in structure (massive or basket, dislocation martensite and twinned martensite) and in hardness. Such gradation can be explained on the basis of the theory of phase transformation kinetic stages developed by A.L. Roitburd

Abstract (Russian)

Изучено влияние скорости охлаждения в диапазоне от 100 до 5 х 105 К/с на температуру начала ОЦК → ГПУ-полиморфного превращения в цирконии. Показано, что в цирконии, как и во многих других полиморфных металлах (Ti, Fe), имеются три кинетических ступени превращения, отличающиеся температурой начала (800; 640 и 520 град С), структурой (массивная или корзиночная, дислокационный мартенсит и двойникованный мартенсит) и твердостью. Такая ступенчатость может быть объяснена на основе теории кинетических ступеней фазовых превращений А.Л. Ройтбурда

Additional details

Additional titles

Original title (Russian)
Vliyanie uskorennogo okhlazhdeniya na polimorfnoe prevrashchenie v tsirkonii

Publishing Information

Journal Title
Fizika Metallov i Metallovedenie
Journal Volume
98
Journal Issue
1
Journal Page Range
p. 69-75
ISSN
0015-3230
CODEN
FMMEA9

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36037746
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BCC LATTICES; COOLING; CRYSTAL-PHASE TRANSFORMATIONS; HCP LATTICES; LATTICE PARAMETERS; MICROHARDNESS; MICROSTRUCTURE; TRANSITION TEMPERATURE; YOUNG MODULUS; ZIRCONIUM
Descriptors DEC
CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; ELEMENTS; HARDNESS; HEXAGONAL LATTICES; MECHANICAL PROPERTIES; METALS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS

Optional Information

Notes
22 refs., 3 figs., 2 tabs.