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Actual Problems in Machine Building. 2016. N 3
Materials Science
in Machine Building
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456
10.
Прудников А.Н., Прудников В.А., Богонос Е.В
. Оценка структуры, свойств и
загрязненности неметаллическими включениями деформационно-термоциклически
обработанной стали 10 // Сборник материалов ХIХ Международной научно-практической
конференции «Металлургия: технология, инновации, качество», 15–16 ноября 2015 г. –
Новокузнецк: Изд-во СибГИУ, 2015. – С. 35–39.
11.
Кекало И.Б., Самарин Б.А
. Физическое металловедение прецизионных сплавов.
Сплавы с особыми магнитными свойствами. – М.: Металлургия, 1989. – 496 с.
INFLUENCE OF THERMOCYCLIC FORGING AND SUBSEQUENT ANNEALING
ON THE COERCIVE FORCE AND LINEAR EXPANSION OF STEEL 10
Prudnikov A.N.
,
D.Sc.(Engineering), Professor, e-mail:
a.prudnikov@mail.ruPrudnikov V.A.
, Ph.D. student, e-mail:
vladpr88@gmail.comSiberian State Industrial University, 42 Kirova st. Novokuznetsk, 654007, Russian Federation
Abstract
The results of the effect of pre thermocyclic forging and subsequent annealing in the range
100÷900°C in increments of 100ºС steps on the microstructure, coercive force and a linear
expansion of hot-rolled steel sheet 10. Is established that the use of pre-deformation thermocyclic
leads to a an increase of coercive force is not a more than 8% compared with the steel manufactured
by industrial technology. The results of determination of the temperature coefficient of linear
expansion revealed that pre-forging thermocyclic little effect on the thermal expansion of steel (the
changes do not exceed 5%). The possibility of reducing coercive force of sheet steel made using
thermocyclic forging by applying heat treatment. Annealing at 900ºС for 10 hours to reduce the
coercive force steel almost 3 times compared with the thermally untreated condition. In addition,
annealing of this mode reduces the temperature coefficient of linear expansion of steel sheet in an
average of 6% in the temperature range 50-450 ° C test. Wherein the most significant decrease in
the average temperature coefficient of linear expansion at low temperatures between 50 and 200 °
C. It is 7 - 10% compared with the steel without heat treatment.
Keywords
steel, structure, deformation, thermocyclic forging, coercive force, linear expansion, annealing,
rolling