High Temperature Strain of Metals and Alloys Part 12 docx
High Temperature Strain of Metals and Alloys Part 12 docx
... 171
– influence of stress on 120
– influence of temperature on
116–118, 120
– dislocation mechanisms of
strain 119 127 , 129
– properties 115
– shear strain 125 , 126
solid solutions
– Ni-based ... refractory alloys 151, 152
– in refractory metals 143–145,
147–150, 152
– in solid solutions 54
– in superalloys 86, 87, 95, 96,
116 120 , 124 , 125
– at higher temperat...
High Temperature Strain of Metals and Alloys Part 8 docx
... strengthening
phases of superalloys with the rate of the steady-state creep ˙ε of the same
alloys. The superalloy EI437B with
u
2
A
= 460 pm
2
at 1023K has the least
high- temperature strength of the three alloys ... a/6[
¯
121 ] + a/6[
¯
21
¯
1]
+APB
[
¯
101] 0.27
[0
¯
11] 0
[111] (
¯
111) [110] 0.27 a/2[110] → a/3[211] + a/6[
¯
11
¯
2]+SISF
[101] 0.27
[0
¯
11] 0
High Tempe...
High Temperature Strain of Metals and Alloys Part 11 docx
... minimum strain rate of niobium and molybdenum is dependent ex-
ponentially on the applied stress at high temperatures.
The mean value of the activation energy of the high- temperature strain for
niobium ... 44Nb–35Ti–6Al–5Cr–8V–1W–0.5Mo–
0.3Hf. The microstructure of extruded and recrystallized material consists of
a solid solution and of particles of titanium carb...
High Temperature Strain of Metals and Alloys Part 1 ppt
... Republic of Germany
Printed on acid-free paper
ISBN-13: 978-3-527-31338-9
ISBN-10: 3-527-31338-9
Valim Levitin
High Temperature Strain
of Metals and Alloys
High Temperature Strain of Metals and Alloys, ... latticeparameters of thematrix andof the hardening
phase.
The subject of the last chapter is the peculiarities of the strain behavior of
refractory m...
High Temperature Strain of Metals and Alloys Part 2 pptx
... been
determined by the X-ray method at high temperatures.
Pure metals, solid solutions and nickel-based superalloys have been stud-
ied.
High Temperature Strain of Metals and Alloys, Valim Levitin (Author)
Copyright
c
... investiga-
tions of metals and alloys directly during high- temperature deformation. The
method of measurement of the irradiation intensit...
High Temperature Strain of Metals and Alloys Part 3 pdf
... (3.2)
is of great importance for our understanding of the physical mechanism of
high- temperature deformation.
Fig. 3.16 Histograms of the distribution of distances
between jogs in screw components of ... systematic examination of
the bright- and dark-field image pictures and diffraction patterns of a large
number of specimens. Most of the dislocations in specimens...
High Temperature Strain of Metals and Alloys Part 4 ppsx
... work, dA, and facilitates the generation
Fig. 4.3 Scheme of energetic barriers for the motion of the
screw dislocation with vacancy-absorbing jogs.
High Temperature Strain of Metals and Alloys, ... mechanisms of deformation.
The average subgrain sizes,
D and the average subgrain misorientations,
η, have been systematically directly measured during high- temperature...
High Temperature Strain of Metals and Alloys Part 5 pdf
... adequate understanding of dislocation processes in these ranges
of temperature and stress is of great practical importance. Most heat-resistant
metals, steels and alloys operate at temperatures ... 2πZ)
−
µb
2πλX
(4.22)
High Temperature Strain of Metals and Alloys, Valim Levitin (Author)
Copyright
c
2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISBN:...
High Temperature Strain of Metals and Alloys Part 6 doc
... preliminary decreased value of λ and increased value of D lead to the
strain rate decreasing when the applied stress is relatively low.
High Temperature Strain of Metals and Alloys, Valim Levitin (Author)
Copyright
c
... engines.
One of the most important requirements is resistance to high- temperature
deformation. This has created a need for alloys that can with...
High Temperature Strain of Metals and Alloys Part 7 pot
... ×60000.
88 6 High- temperature Deformation of Superalloys
6.2
Changes in the Matrix of Alloys during Strain
The specimens of industrial superalloys (see Table 2.1) were investigated in
situ by means of ... 2r
exp
−
∆U
kT
exp
0 .12 b
2
· 2r
kT
(6 .12)
The last equation is a semi-empirical one, because we have used the results
of measurements of the particle sizes a...