SU834445A1 - Method of determination of damages accumulated due to heat-resistant material creeping - Google Patents
Method of determination of damages accumulated due to heat-resistant material creeping Download PDFInfo
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- SU834445A1 SU834445A1 SU792715479A SU2715479A SU834445A1 SU 834445 A1 SU834445 A1 SU 834445A1 SU 792715479 A SU792715479 A SU 792715479A SU 2715479 A SU2715479 A SU 2715479A SU 834445 A1 SU834445 A1 SU 834445A1
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Description
(54) СПОСОБ ОПРЕДЕЛЕНИЯ НАКОПЛЕННОЙ(54) METHOD FOR DETERMINING ACCUMULATED
ВСЛЕДСТВИЕ ПОЛЗУЧЕСТИ ПОВРЕЖДЕННОСТИTHE CONSEQUENCY OF CREATIVITY DAMAGE
ЖАРОПРОЧНОГО МАТЕРИАЛАHEAT-RESISTANT MATERIAL
II
Изобретен.ие относитс к определению механических свойств материалов и элементов конструкции, в частности к способам определени накоплей кш вследствие ползучести поврежденности жаропрочного материала.The invention relates to the determination of the mechanical properties of materials and structural elements, in particular, to methods for determining the accumulation of CS due to creep of damage to a heat-resistant material.
Известен способ определени накопленной вследствие ползучести поврежденности жаропрочного материала, заключающийс в том, что образец материала помещают в вакуумную камеру, нагревают и нагружают в течение заданного времени, а затем по результатам испытани суд т о накопленной поврежденности материала 1.A known method for determining creep-accumulated damage to a heat-resistant material consists in placing a sample of a material in a vacuum chamber, heating and loading for a predetermined time, and then judging by the results of the test, accumulated damage to the material 1 is judged.
В известном способе о накопленной поврежденности суд т по деформационНы.м характеристикам материала - скорости деформации и накопленной деформации полузучести.In the known method, the cumulative damage is judged by the deformation characteristics of the material — the strain rate and the cumulative creep strain.
Недостатком способа вл етс низка точность определени поврежденности при ускоренном определении накопленной поврежденности .The disadvantage of the method is the low accuracy of the damage determination with the accelerated determination of the accumulated damage.
Цель изобретени - повышение точности при ускоренном определении.The purpose of the invention is to improve accuracy with an accelerated determination.
Указанна цель достигаетс тем, что в способе определени накопленной вследствие ползучести поврежденности жаропрочного материала,образец до испытани взЕ ещивают , а перед заверщением испытани обдувают в течение 1,5-2,0 ч при температуре испытани активным газом и о накопленной повреждениости материала суд т по привесу образца.This goal is achieved by the fact that in the method of determining accumulated damage due to creep of heat-resistant material, the sample is taken before the test, and before the test is completed, the test is blown for 1.5-2.0 hours at the test temperature of the active gas and I'll add the sample.
Способ осуществл етс следующим образом .The method is carried out as follows.
Из исследуемого жаропрочного материала изготовл ют образец дл испытани на ползучесть и взвешивают его. Затем образец помещают в вакуумную испытательную камеру и размешают в захватах нагружающего устройства. После этого рабочий объем камеры вакуумируют и затем нагревают образец до температуры испытани и нагружают его в течение заданного времени. Перед завершением испытани образец обдувают в течение 1,5-2,0 ч под нагрузкой при температуре испытани активны.м газом, то есть газом, проникающим в микропоры, которые образуютс вследствие поврежденности материала и вызывают резкое изменение механических свойств. Активный газ, проникший в микропоры, вызывает привес образца. Затем образец разгружают, охлаждают , извлекают из вакуумной камеры, взвешивают и по привесу образца суд т о накопленной поврежденности материала.A creep test specimen is fabricated from the heat-resistant material under study and weighed. Then the sample is placed in a vacuum test chamber and stirred in the grips of the loading device. After that, the working volume of the chamber is evacuated and then the sample is heated to the test temperature and loaded for a predetermined time. Before completing the test, the sample is blown for 1.5-2.0 hours under load at the test temperature of the active gas, i.e. gas, penetrating into the micropores, which are formed due to material damage and cause an abrupt change in mechanical properties. Active gas penetrated into the micropores, causes the sample to gain weight. Then the sample is unloaded, cooled, removed from the vacuum chamber, weighed, and the weight of the sample is judged on the accumulated damage to the material.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SU792715479A SU834445A1 (en) | 1979-01-23 | 1979-01-23 | Method of determination of damages accumulated due to heat-resistant material creeping |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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SU792715479A SU834445A1 (en) | 1979-01-23 | 1979-01-23 | Method of determination of damages accumulated due to heat-resistant material creeping |
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SU834445A1 true SU834445A1 (en) | 1981-05-30 |
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SU792715479A SU834445A1 (en) | 1979-01-23 | 1979-01-23 | Method of determination of damages accumulated due to heat-resistant material creeping |
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SU (1) | SU834445A1 (en) |
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1979
- 1979-01-23 SU SU792715479A patent/SU834445A1/en active
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