TU Delft login

Quenching- and Deformation Dilatometer

Previous Page back |Print Document print | 91 of 357 | « previous | next »

Quenching- and Deformation Dilatometer.png

Contact details

Geerlofs, N. ir.
Mechanical, Maritime and Materials Engineering (3mE), Materials Science and Engineering
Mekelweg 2, 2628 CD Delft
Tel : +31 (0)15 27 84920
E-mail : n.geerlofs@tudelft.nl
Website : Open website

General Information


Quenching- and Deformation Dilatometer


Department of Materials Science and Engineering, Room 3B-0-32, Mekelweg 2, Delft (building #34)

Key words:

dilatometry, deformation, Phase transformation kinetics

Measured quantity:

In dilatometry, the dimension of a substance under negligible load is measured as a function of temperature while the substance is subjected to a controlled temperature program. Examples of applications are thermal expansion measurements, softening point determinations. Different gas atmospheres are possible.

Main application:

Measuring the kinetics of phase transformations under different thermal treatments, possibly after prior deformation (compression).

Instrument specification

Instrument type:
Bähr Dil 805 A/D

Manufacturer: Bähr-Thermoanalyse GmbH

Temperature range dependent on sample material:
DIL 805A 20°C - 1500°C
DIL 805D 20°C - 1500°C

Heating principle:

Sample material:
electrically conductive solid body

inert gas, vacuum, air

Δl °C: 0,05 µm, 0,05°C

 Quenching dilatometerDeformation dilatometer
Sample geometrysoild and hollow sample
approx: d=4 mm,
 l= 10 mm
solid sample
approx: d=5 mm,
 l= 10 mm
Heating ratemax 4000 K.s-1
(hollow sample)
Typical for massive sample: 20 K.s-1
max 100 K.s-1
Cooling ratemax 2500 K.s-1
(hollow sample)
60 K.s-1(massive  sample)
max 100 K.s-1
Deformation force max 50 kN
Deformation rate 0,01 - 125 mm s-1
Strain rate d/dt ; 0,1 - 12,5 s-1
True strain; 0,05 - 1,2
Deformation way up to 3mm sample rest length
# deformation steps any number
Min. breaks between deformation steps 60 ms