CN105823672A - Metallographic low-temperature observation device - Google Patents

Metallographic low-temperature observation device Download PDF

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Publication number
CN105823672A
CN105823672A CN201610348327.7A CN201610348327A CN105823672A CN 105823672 A CN105823672 A CN 105823672A CN 201610348327 A CN201610348327 A CN 201610348327A CN 105823672 A CN105823672 A CN 105823672A
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CN
China
Prior art keywords
low temperature
platform
strut
tie
tight
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610348327.7A
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Chinese (zh)
Inventor
陈六彪
王俊杰
周远
顾开选
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Technical Institute of Physics and Chemistry of CAS
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Technical Institute of Physics and Chemistry of CAS
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Application filed by Technical Institute of Physics and Chemistry of CAS filed Critical Technical Institute of Physics and Chemistry of CAS
Priority to CN201610348327.7A priority Critical patent/CN105823672A/en
Publication of CN105823672A publication Critical patent/CN105823672A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/42Low-temperature sample treatment, e.g. cryofixation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a metallographic low-temperature observation device which comprises a cold quantity transport channel connected with a low-temperature cold head, a low-temperature platform for placing an observation sample, a vacuum cover for accommodating the cold quantity transport channel and the low-temperature platform, an observation window arranged above the vacuum cover, a movable sliding block capable of sliding relative to the low-temperature platform, and a tension and compression rod connected with the movable sliding block, wherein the low-temperature platform and the movable sliding block are fixedly connected with the observation sample. The device provided by the invention can realize the observation of the stretching and compression of the sample material under the low-temperature condition, and has compact structure and convenient operation.

Description

A kind of metallographic low temperature finder
Technical field
The present invention relates to metallographic observation technical field, the device observed particularly to a kind of metallographic low temperature.
Background technology
The performances such as the mechanics of metal, chemistry, calorifics have close contacting with the internal structure of metal, metallographic microanalysis method is by making metallographic sample, and under metallurgical microscope the most thousands of microscopic structures observing material of method tens, can analyze, detect and study metal and alloy interior tissue and defect, the tissue of metal and alloy and the relation of its chemical composition can be obtained, may determine that all kinds of alloy material microscopic structure after different processing and heat treatment, the quality of quality of materials can be differentiated.Therefore, metallographic observation and analysis have very important significance in metallography and materialogy field, in the national pillar industry such as iron and steel, metallurgy, space flight, in the basic research field of material, are widely applied.
In recent years, scientific research at material finds, the microstructure of material Deformation Mechanism under cryogenic and significant difference under room temperature condition, and in current material at low temperature characteristic research, after first passing through K cryogenic treatment material, return again to warm to room temperature and observe and analyze, this kind of method is difficult to meet the demand being analyzed specimen material under low temperature state, it is impossible to material microstructure carries out under realizing directly being encouraged deformation under cryogenic conditions by high magnification microscopic system omnidistance dynamic observation and analyzes.
Summary of the invention
Based on this, for above-mentioned technical problem, embodiments provide the device that a kind of metallographic low temperature is observed, it is ensured that while sample can carry out low-temperature metallography observation, can also realize material stretching under low temperature observation condition and compression, and compact conformation, easy to operate.
In order to realize foregoing invention purpose, embodiments provide a kind of metallographic low temperature finder, this device includes that the cold transfer passages being connected with low temperature cold head, the low temperature platform placing observation sample, accommodating described cold transfer passages and the vacuum (-tight) housing of described low temperature platform, described vacuum (-tight) housing are provided above watch window, place on described low temperature platform and can move slide block relative to what described low temperature platform slided, and described low temperature platform and described mobile slide block are all connected fixing with described observation sample, described device also includes the strut and tie connecting described mobile slide block.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described strut and tie is low temperature strut and tie and room temperature strut and tie, and arranges tension-compression sensor between described low temperature strut and tie and room temperature strut and tie.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described room temperature strut and tie passes described vacuum (-tight) housing, and described room temperature strut and tie connects displacement generator.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described low temperature platform is connected with low temperature cold head by cold transfer passages, and the low-temperature receiver of described low temperature cold head is Cryo Refrigerator, or cryogenic media.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described low temperature platform has temperature controlling function, and temperature control is in the range of from low temperature to room temperature.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described low temperature platform arranges holding part, and described mobile slide block is positioned over described holding part, and described low temperature platform and described mobile slide block are all connected with described observation sample screw.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described vacuum (-tight) housing upper end arranges vacuum (-tight) housing flange, and described watch window is placed on above described vacuum (-tight) housing flange.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, the material of described watch window is quartz glass.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described low temperature platform is placed on described cold quantity transmission passage, and its described cold quantity transmission passage provides for described low temperature platform and supports.
In a kind of metallographic low temperature finder that the embodiment of the present invention provides, described device also includes optical microscope.
A kind of metallographic low temperature finder that the embodiment of the present invention provides, can realize specimen material stretching under cryogenic and the observation of compression, and compact conformation, easy to operate.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of metallographic low temperature finder that an embodiment of the present invention provides;
Fig. 2 is the structural representation of the another kind of metallographic low temperature finder that an embodiment of the present invention provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the drawings and specific embodiments, embodiment of the present invention is described further in detail.It should be appreciated that the detailed description of the invention described in this specification is only used to explain the present invention, it is not intended to limit the present invention.
Refer to shown in Fig. 1, an embodiment of the present invention provides one and carries out low temperature finder, this device includes that the cold transfer passages 3 being connected with low temperature cold head (not shown), the low temperature platform 4 placing observation sample 6, accommodating cold transfer passages 3 and the vacuum (-tight) housing 1 of low temperature platform 4, vacuum (-tight) housing 1 are provided above watch window 2, on above-mentioned low temperature platform 4 place can relative low temperature platform 4 slide mobile slide block 5, and low temperature platform 4 and mobile slide block 5 are all connected fixing with observation sample 6, said apparatus also includes the strut and tie 10 connecting mobile slide block 5.
Vacuum (-tight) housing 1 is overall in rectangular-shaped cavity body structure, and it observes offer vacuum environment for carrying out metallographic low temperature.The structure of this vacuum (-tight) housing 1 can also be set to different structures according to actual needs.
The left and right sides, vacuum (-tight) housing 1 upper end arranges vacuum (-tight) housing flange 1a, and watch window 2 is placed on above-mentioned vacuum (-tight) housing flange 1a, and the material of watch window 2 is quartz glass, and it can also be arranged as required to as other transparent materials.
Cold transfer passages 3 is arranged for tubulose, and its one end is connected with low temperature cold head, and the low-temperature receiver of this low temperature cold head is Cryo Refrigerator, or cryogenic media, such as liquid nitrogen, liquid helium etc..The other end of cold transfer passages 3 is connected with low temperature platform 4, provides required cold temperature for low temperature platform 4.
Further, above-mentioned low temperature platform 4 is placed on cold transfer passages 3, the most directly contacts with vacuum (-tight) housing 1, and cold transfer passages 3 is that low temperature platform 4 provides and supports, and can effectively reduce contacting of low temperature platform 4 and other structures, decrease the leaking heat of low temperature platform 4.
Low temperature platform 4 is overall in rectangular structure, and its upper right corner is provided with the holding part (sign) of vacancy, holding movable slide block 5 on this holding part, and above-mentioned mobile slide block 5 can slide relative to low temperature platform 4 on holding part.Low temperature platform 4 has temperature controlling function, and temperature control is in the range of from low temperature to room temperature, and it can be to observe the temperature that sample 6 provides required.
Mobile slide block 5 is in rectangular structure, and its lower end is connected with the holding part bottom of low temperature platform 4, is connected with strut and tie 11 on the right side of it, and strut and tie 11 can pull/push on above-mentioned mobile slide block 5 and slide relative to low temperature platform.
Further, observe sample 6 and be connected by screw (sign) with low temperature platform 4 and mobile slide block 5, and the material observing sample 6 can be metal, it is also possible to be nonmetallic according to actual needs.
Referring to Fig. 2, strut and tie 11 is provided with tension-compression sensor 8, this tension-compression sensor 8 can realize the power of stretching or compression sample is calculated and tested.
Strut and tie 11 is low temperature strut and tie 7 and room temperature strut and tie 9 relative to the both sides of tension-compression sensor 8, room temperature strut and tie 9 is through vacuum (-tight) housing 1, its one end connects displacement generator 10, stretching or the compression to strut and tie 11 and moving slip 5 can be realized by this displacement generator 10, thus realizing stretching or the compression observing sample 6, this displacement generator 10 can calculate stretching or the displacement of compression.
Further, the device of above-mentioned low temperature finder also includes optical microscope (not shown), and this optical microscope is positioned at the outside of watch window 2, it is also possible to be placed on according to actual needs between observation sample 6 and watch window 2.
When real work or analysis, observation sample 6 is fixed by screws on low temperature platform 4 and mobile slide block 5;Low temperature required for low temperature platform 4 is transferred to low temperature platform 4 by cold transfer passages 3 by low temperature cold head;Then by stretching/compressing displacement generator 10, drive strut and tie 11 to pull mobile slide block 5 relative low temperature platform 4 to slide, thus realize observing stretching or the compression of sample 6.
Displacement generator 10 can calculate the displacement of stretching/compressing, and tension-compression sensor can measure the power of stretching/compressing, and low temperature platform can realize the control observing sample temperature, such that it is able to realize compressing or analysis under pulled out condition observing sample 6 when low temperature.It may occur to persons skilled in the art that, when need not the power of stretching or compression is tested, tension-compression sensor 8 can not be installed.
A kind of metallographic low temperature finder that the embodiment of the present invention provides, can realize specimen material stretching under cryogenic and the observation of compression, and compact conformation, easy to operate.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
According to announcement and the teaching of description above, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, should also be as some modifications and changes of the present invention falling in the scope of the claims of the present invention.Although additionally, employ some specific terms in this specification, but these terms are merely for convenience of description, the present invention is not constituted any restriction.

Claims (10)

1. a metallographic low temperature finder, described device includes that the cold transfer passages being connected with low temperature cold head, the low temperature platform placing observation sample, accommodating described cold transfer passages and the vacuum (-tight) housing of described low temperature platform, described vacuum (-tight) housing are provided above watch window, it is characterized in that: place on described low temperature platform and can move slide block relative to what described low temperature platform slided, and described low temperature platform and described mobile slide block are all connected fixing with described observation sample, described device also includes the strut and tie connecting described mobile slide block.
Device the most according to claim 1, it is characterised in that described strut and tie is low temperature strut and tie and room temperature strut and tie, and arranges tension-compression sensor between described low temperature strut and tie and room temperature strut and tie.
Device the most according to claim 2, it is characterised in that described room temperature strut and tie passes described vacuum (-tight) housing, and described room temperature strut and tie connects displacement generator.
Device the most according to claim 3, it is characterised in that described low temperature platform is connected with low temperature cold head by cold transfer passages, and the low-temperature receiver of described low temperature cold head is Cryo Refrigerator, or cryogenic media.
Device the most according to claim 4, it is characterised in that described low temperature platform has temperature controlling function, and temperature control is in the range of from low temperature to room temperature.
Device the most according to claim 4, it is characterised in that described low temperature platform arranges holding part, described mobile slide block is positioned over described holding part, and described low temperature platform and described mobile slide block are all connected with described observation sample screw.
Device the most according to claim 6, it is characterised in that described vacuum (-tight) housing upper end arranges vacuum (-tight) housing flange, described watch window is placed on above described vacuum (-tight) housing flange.
Device the most according to claim 7, it is characterised in that the material of described watch window is quartz glass.
Device the most according to claim 8, it is characterised in that described low temperature platform is placed on described cold quantity transmission passage, its described cold quantity transmission passage provides for described low temperature platform and supports.
Device the most according to claim 9, it is characterised in that described device also includes optical microscope.
CN201610348327.7A 2016-05-24 2016-05-24 Metallographic low-temperature observation device Pending CN105823672A (en)

Priority Applications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109540635A (en) * 2018-11-22 2019-03-29 大唐东北电力试验研究院有限公司 A kind of discrimination method of 12Cr1MoV steel serious nodularization and normal metallographic structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU564571A1 (en) * 1975-03-12 1977-07-05 Научно-Исследовательский И Конструкторский Институт Испытательных Машин, Приборов И Средств Измерения Масс Vacuum thermochamber for testing machines
SU1185176A1 (en) * 1983-01-17 1985-10-15 Предприятие П/Я А-3605 Installation for mechanical tests of material samples at low temperatures
CN1580766A (en) * 2003-08-01 2005-02-16 中国科学院金属研究所 Low temperature metallographic device
CN102944464A (en) * 2012-09-24 2013-02-27 大连理工大学 Visual cryogenic mechanical testing device
CN103149090A (en) * 2013-02-18 2013-06-12 西南大学 Film three-dimensional stretching test apparatus
CN103901232A (en) * 2014-03-13 2014-07-02 复旦大学 Low-temperature scanning tunneling microscope using closed-cycle refrigerator to achieve refrigeration
CN104089828A (en) * 2014-06-24 2014-10-08 上海应用技术学院 Multifunctional microcomponent extensograph

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU564571A1 (en) * 1975-03-12 1977-07-05 Научно-Исследовательский И Конструкторский Институт Испытательных Машин, Приборов И Средств Измерения Масс Vacuum thermochamber for testing machines
SU1185176A1 (en) * 1983-01-17 1985-10-15 Предприятие П/Я А-3605 Installation for mechanical tests of material samples at low temperatures
CN1580766A (en) * 2003-08-01 2005-02-16 中国科学院金属研究所 Low temperature metallographic device
CN102944464A (en) * 2012-09-24 2013-02-27 大连理工大学 Visual cryogenic mechanical testing device
CN103149090A (en) * 2013-02-18 2013-06-12 西南大学 Film three-dimensional stretching test apparatus
CN103901232A (en) * 2014-03-13 2014-07-02 复旦大学 Low-temperature scanning tunneling microscope using closed-cycle refrigerator to achieve refrigeration
CN104089828A (en) * 2014-06-24 2014-10-08 上海应用技术学院 Multifunctional microcomponent extensograph

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109540635A (en) * 2018-11-22 2019-03-29 大唐东北电力试验研究院有限公司 A kind of discrimination method of 12Cr1MoV steel serious nodularization and normal metallographic structure

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