SU147351A1 - The method of studying the microstructure of metals and alloys when testing flat samples in the process of stretching at different speeds - Google Patents
The method of studying the microstructure of metals and alloys when testing flat samples in the process of stretching at different speedsInfo
- Publication number
- SU147351A1 SU147351A1 SU680761A SU680761A SU147351A1 SU 147351 A1 SU147351 A1 SU 147351A1 SU 680761 A SU680761 A SU 680761A SU 680761 A SU680761 A SU 680761A SU 147351 A1 SU147351 A1 SU 147351A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- microstructure
- stretching
- metals
- studying
- alloys
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Известны различные способы изучени микроструктуры металлов и сплавов при испытании плоских образцов в процессе раст жени с различными скорост ми в вакууме в широком интервале температур и при различных услови х нагружени . В известных способах во врем испытани примен етс фотографирование и киносъемка поверхно . сти образца.Various methods are known for studying the microstructure of metals and alloys when testing flat samples during stretching at different speeds in vacuum over a wide range of temperatures and under various loading conditions. In the known methods, photographing and filming on the surface is applied during the test. the sample.
Описываемый способ отличаетс от известных тем, что в нем одновременно с регистрацией усили и измерением деформаций на участке наблюдени в процессе нагружени непосредственно наблюдают и фиксируют кинетику изменени микроструктуры поверхности образца при развитии деформации и разрушении. Такой способ позвол ет определить вли ние степени легировани , термической и механической обработки на прочность исследуемого материала.The described method differs from the known ones in that simultaneously with recording the force and measuring the deformations at the observation site during the loading process, the kinetics of changes in the microstructure of the sample surface are observed and the deformation and fracture develop. This method allows to determine the effect of the degree of doping, thermal and mechanical treatment on the strength of the material under study.
На чертеже изображен образец дл испытаний в обш,ем виде.The drawing shows a test specimen in general form.
Образец / подготавливаетс дл металлографического исследовани путем шлифовки и последуюшей полировки одной из его поверхностей . В средней части образца при помоши прибора дл измерени микротвердости нанос тс отпечатки 2 алмазной пирамиды, позвол ющие производить наблюдени и фотографирование одного и того же участка поверхности образца. При помощи отпечатков определ етс также удлипение образца в процессе раст л :ени . Точность измерени деформаций вл етс допустимой дл качественного изучени процессов деформировани металлов при высоких температурах и различных скорост х нагружени . Так как скорость деформации в нагретой зоне отличаетс от теоретической, то при проведении экспериментов дл .The sample is prepared for metallographic examination by grinding and subsequent polishing of one of its surfaces. With the aid of a microhardness tester, fingerprints of 2 diamond pyramids are deposited in the middle part of the sample, which make it possible to observe and photograph the same surface of the sample. With the help of prints, the sample elongation in the process of stretching is also determined. The accuracy of strain measurement is acceptable for the qualitative study of the processes of deforming metals at high temperatures and different loading rates. Since the strain rate in the heated zone differs from the theoretical one, when conducting experiments for.
№ 147351 -. 2 -No. 147351 -. 2 -
каждого исследуемого материала скорость деформации должна быть вы влена экспериментальным путем.For each material studied, the strain rate should be determined experimentally.
Установка дл осуществлени описываемого способа микроструктуры позвол ет производить ступенчатое изменение скорости перемещени захватов через 10-20% абсолютной величины скорости раст жени .The installation for carrying out the described microstructure method makes it possible to produce a stepwise change in the speed of movement of the grippers after 10-20% of the absolute value of the rate of extension.
Наличие металлографического микроскопа, снабженного объективами с больщим рабочим рассто нием, позвол ет, одновременно с регистрацией усилий силоизмерителем и измерением деформаций при помощи стрелочного индикатора, непосредственно наблюдать изменение микроструктуры поверхности исследуемого образца.The presence of a metallographic microscope equipped with lenses with a large working distance makes it possible, simultaneously with the recording of efforts by a force meter and the measurement of deformations using a dial gauge, to directly observe the change in the microstructure of the surface of the sample under study.
Предмет изобретени Subject invention
Способ изучени микроструктуры металлов и сплавов при испытании плоских образцов в процессе раст жени с различными скорост ми в вакууме в щироком интервале температур при различных услови х нагружени с применением фотографировани , и киносъемки поверхности образца во врем испытаний, от л ич а ющи йс тем, что, с целью вы снени вли ни степени легировани , термической и механической обработки на прочность исследуемого материала, одновременно с регистрацией усили и измерением деформаций на участке наблюдени в процессе нагружени непосредственно наблюдают и фиксируют кинетику изменени микроструктуры поверхности образца при развитии деформации и разрушении.The method of studying the microstructure of metals and alloys when testing flat samples in the process of stretching at different speeds in a vacuum over a wide temperature range under various loading conditions using photography, and filming the surface of the sample during tests that are limited to , in order to determine the effect of the degree of doping, thermal and mechanical treatment on the strength of the material under study, simultaneously with the recording of the force and the measurement of deformations at the observation site in the process of loading They directly observe and record the kinetics of changes in the microstructure of the sample surface during the development of deformation and fracture.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU680761A SU147351A1 (en) | 1960-09-30 | 1960-09-30 | The method of studying the microstructure of metals and alloys when testing flat samples in the process of stretching at different speeds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU680761A SU147351A1 (en) | 1960-09-30 | 1960-09-30 | The method of studying the microstructure of metals and alloys when testing flat samples in the process of stretching at different speeds |
Publications (1)
Publication Number | Publication Date |
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SU147351A1 true SU147351A1 (en) | 1961-11-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU680761A SU147351A1 (en) | 1960-09-30 | 1960-09-30 | The method of studying the microstructure of metals and alloys when testing flat samples in the process of stretching at different speeds |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU147351A1 (en) |
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1960
- 1960-09-30 SU SU680761A patent/SU147351A1/en active
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