SU381987A1 - METHOD FOR DETERMINING THE PARAMETERS OF THE Squeezing Capacity of Metals and Alloys - Google Patents
METHOD FOR DETERMINING THE PARAMETERS OF THE Squeezing Capacity of Metals and AlloysInfo
- Publication number
- SU381987A1 SU381987A1 SU1356167A SU1356167A SU381987A1 SU 381987 A1 SU381987 A1 SU 381987A1 SU 1356167 A SU1356167 A SU 1356167A SU 1356167 A SU1356167 A SU 1356167A SU 381987 A1 SU381987 A1 SU 381987A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- determining
- parameters
- alloys
- metals
- rate
- Prior art date
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
1one
Изобретение относитс к области исследовани физических свойств металлов и сплавов с помощью тепловых и электрических средств и служит дл определени изменени коэффициента сжимаемости в результате поли.морфного превращени исследуемого материала.The invention relates to the field of studying the physical properties of metals and alloys using thermal and electrical means and serves to determine the change in the compressibility factor as a result of the polym morphic transformation of the material under study.
Известный способ определени параметров сжимаемости путем дилатометрического измерени скорости теплового расширени образца при нагреве его электрическим током и определени расходуемой мощности нагрева при фиксируемых температурах позвол ет опредеv ть лишь температурный коэффициент сжимаемости .The known method for determining the compressibility parameters by dilatometric measurement of the rate of thermal expansion of a sample when heated by electric current and determining the consumed heating power at fixed temperatures allows only the temperature coefficient of compressibility to be determined.
Предложенный способ позвол ет определ ть изменение (скачок) .коэффициента сжимаемости в процессе полиморфного превращени исследуемого материала путем измерени коэффициента Линейного расширени и температурного коэффициента электросопротивлени в процессе нагрева образца и нахождени в результате Полимерного превращени изменени величин коэффициента линейного расширени , температурного коэффициента электросопротивлени и скоростБ теплового расширени . The proposed method makes it possible to determine the change (jump) in the compressibility factor in the process of polymorphic transformation of the material under investigation by measuring the Linear Expansion Coefficient and the temperature coefficient of electrical resistivity during sample heating and finding as a result of the Polymer Transformation the change in the values of the linear expansion coefficient, temperature coefficient of electrical resistivity and thermal rate. extensions.
Высока скорость нагрева образца и синхронное измерение заданных физических параметров обеспечивают высо.кую точность способа при сравнительной простоте его осуществлени .The high heating rate of the sample and the synchronous measurement of the specified physical parameters provide high accuracy of the method with comparative simplicity of its implementation.
Способ заключаетс в следующем. Цилиндрический образец заданного сечени S подвергают электронагреву до температуры, превышающи| 1 температуру полиморфного превращени . До начала полиморфного превращени дилатометрическим способом определ ют коэффициент линейного расширени р, температурный коэффициент электросопротивлени б г, ;i скорость теплового расширени ; в процессе полиморфного превращени измер ют те.мпературу образца Т и значение мощности нагревающего тока N после завершени полиморфного превращени наход т изменени величин коэффициента линейного расширени Ар, температурного коэффициента электросопротивлени Лбо и скорости теплового расгпирени . Искомую величину изменени коэффициента сжимаемост) в результате полиморфного превращени A.v определ ют по формуле:The method is as follows. A cylindrical sample of a given cross-section S is electrically heated to a temperature greater than | 1 polymorphic transformation temperature. Prior to the beginning of polymorphic transformation, the linear expansion coefficient p, the temperature coefficient of electrical resistance bg, i are determined by the dilatometric method; i the rate of thermal expansion; during the polymorphic transformation, the sample temperature T is measured and the values of the heating current power N after the completion of the polymorphic transformation find changes in the values of the linear expansion coefficient Ap, the temperature coefficient of electrical resistance of the Fore, and the rate of thermal expansion. The sought value of the change in the compressibility factor) as a result of the polymorphic transformation A.v is determined by the formula:
Г(Аб. G (Ab.
-3A|3)+AFi6p-3|3),-3A | 3) + AFi6p-3 | 3),
Л L
где W - скорость теп,дового расширени после завершени полиморфного превращенп .where W is the rate of heat, expansion after completion of polymorphic transformation.
Так, например, на чертеже приведена дилатограмма стала У8, где одновременно зафиксировано изменение во времени длины и температуры образца, а также силы тока и напр жени .Thus, for example, the drawing shows a dilatogram of V8, where a change in the length and temperature of the sample, as well as the current and voltage, was recorded simultaneously.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1356167A SU381987A1 (en) | 1969-08-13 | 1969-08-13 | METHOD FOR DETERMINING THE PARAMETERS OF THE Squeezing Capacity of Metals and Alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1356167A SU381987A1 (en) | 1969-08-13 | 1969-08-13 | METHOD FOR DETERMINING THE PARAMETERS OF THE Squeezing Capacity of Metals and Alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
SU381987A1 true SU381987A1 (en) | 1973-05-22 |
Family
ID=20447065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1356167A SU381987A1 (en) | 1969-08-13 | 1969-08-13 | METHOD FOR DETERMINING THE PARAMETERS OF THE Squeezing Capacity of Metals and Alloys |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU381987A1 (en) |
-
1969
- 1969-08-13 SU SU1356167A patent/SU381987A1/en active
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