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YS/T 970-2024: (Determination method of phase transition temperature of nickel-titanium shape memory alloy)
Status: Valid
YS/T 970: Evolution and historical versions
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(Determination method of phase transition temperature of nickel-titanium shape memory alloy)
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| YS/T 970-2014 | English | 399 |
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Phase change temperature measuring method for nickel-titanium shape memory alloys
| Obsolete |
Standard similar to YS/T 970-2024
GB/T 1425 | GB/T 351 | YS/T 581.2 | YS/T 533 | YS/T 485 | YS/T 976 | Basic data
| Standard ID | YS/T 970-2024 (YS/T970-2024) |
| Description (Translated English) | (Determination method of phase transition temperature of nickel-titanium shape memory alloy) |
| Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) |
| Classification of Chinese Standard | H21 |
| Classification of International Standard | 77.120.50 |
| Word Count Estimation | 9,921 |
| Date of Issue | 2024-10-24 |
| Date of Implementation | 2025-05-01 |
| Older Standard (superseded by this standard) | YS/T 970-2014 |
| Issuing agency(ies) | Ministry of Industry and Information Technology |
| Summary | This standard specifies the method for determining the phase transition temperature of nickel-titanium shape memory alloy. This standard is applicable to determining the phase transition temperature of martensitic reverse phase transformation by measuring the recovery deformation during the thermal phase transition process. |
YS/T 970-2014: Phase change temperature measuring method for nickel-titanium shape memory alloys
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Phase change temperature measuring method for nickel-titanium shape memory alloys
ICS 77.160
H16
People's Republic of China Nonferrous Metals Industry Standard
NiTi shape memory alloy transformation temperature measurement method
Issued on. 2014-10-14
2015-04-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard was drafted. Yes REVIEW billion of the new Materials Co., Ltd., Xi'an thinking Metal Materials Co., Xiansaite metal material
Development Co., Ltd., China Nonferrous Metals Industry Standard Quality Measurement Institute.
The main drafters of this standard. YUAN Shan, Miao Weidong, Wang Jiangbo, cattle Jie, Xue SA, Fengzhao Wei, SECOND NORTHWEST, Zhu.
NiTi shape memory alloy transformation temperature measurement method
1 Scope
This standard specifies the nickel-titanium shape memory alloy transformation temperature measurement method --- Bend and Free Recovery Act.
This standard applies to thermal phase transition process by measuring the amount of deformation responses measured reverse martensitic transformation temperature in disguise for reverse martensitic
Variable finishing temperature Af is between -25 ℃ ~ 90 ℃ fully annealed or heat treated wire, pipe or strip.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6379 (all parts) of measurement methods and results Accuracy (trueness and precision)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Free Recovery freerecovery
Shape memory alloy matrix phase below the temperature that is M-phase transformation temperature Ms begin the following phase transition to martensite parent phase, martensite phase M
Phase after deform when heated through M phase reverse transformation temperature range (As ~ Af) to the parent phase transition unconstrained motion.
3.2
Reverse martensitic transformation start temperature austenitestarttemperature
As
In the heating step during the phase transition, opposing martensite parent phase transformation start temperature, phase transition or in a two-step heating process, R-phase (Guo
Transition phase) to a parent phase transition starting temperature.
3.3
R 'phase transformation start temperature R'-phasestarttemperature
R's
In the two-step process of heating the phase change, opposite the martensite start temperature R-phase transformation.
3.4
Linear variable differential transformer LVDT; linearvariabledifferentialtransformer
Belong to linear displacement transducer. LVDT consists of a primary winding, two secondary windings and a movable core or the like, through the primary coil
Weak electromagnetic coupling with the secondary coil, so that the displacement of the core and the variation amount of the electric signal output variation is linear.
3.5
Rotary variable differential transformer RVDT; rotaryvariabledifferentialtransformer
Is angular displacement sensor. It uses the same differential transformer LVDT principle that the mechanical components of the rotation transmission to the angular displacement
Axis transducer, connected thereto driven spoiler/core, changing the voltage induced in the coil/inductance, the output is proportional to the rotation angle
Voltage/current signal.
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