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3Cr-1Mo Steel
Steel name: 3Cr-1Mo
Diagram No.: 4927
Type of diagram: CCT
Chemical composition in weight %: 0.15% C, 0.4% Mn, 3.0% Cr, 0.7% Mo, 0.7% Ni, 0.28% V
Steel group: Ferritic steels
Note: Austenitizing temperature: 1100 C/10 min. The materials used for the investigations are a new
member of 3Cr-1Mo class of low alloy steel and a plain 12Cr
tempered martensitic steel. This 3Cr-1Mo type steel is a new
generation nuclear reactor pressure vessel material with
optimized composition to mitigate temper and irradiation
embrittlement[1]. The AISI 403 steel is used for end fitting
applications in pressurized heavy water reactor. The
respective chemical compositions of the two steels are given
in table 1. A deformation dilatometer Bahr DIL 805 was
operated in the quenching mode for the dilatometry studies.
Hollow tubular samples of outside diameter (O.D) 4.0 mm,
250ìm th ickness and 10 mm length were used for the tests.
The sample was placed between two alumina rods, one of
which was connected to a LVDT with less than 1ìm
resolution for measuring the change in length during the
phase transformations. A thermocouple was spot welded to
the O.D of the sample and it was inductively heated to the
austenitic temperature. The heating rate of 100°C/min was
employed for all tests for carrying the austenitising of the
sample at 1100°C for 10 minutes. For the purpose
dilatometry studies a series of samples were cooled over the
cooling rate range 1075°C/min to 2.2°C/min. The sample
change in length (ÄL) and temperature (T) were acquired
online by a 16 bit DAQ during the entire heat-hold-cool
cycle.
Reference: Not shown in this demo version.
Transformation Diagram
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Disclaimer: The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.