GB/T 15970.9-2007Corrosion of metals and alloys -- Stress corrosion testing -- Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement (English PDF)
金属和合金的腐蚀 应力腐蚀试验 第9部分：渐增式载荷或渐增式位移下的预裂纹试样的制备和应用
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Level / Type
National · Recommended
Issue date
May 14, 2007
Implementation date
December 1, 2007
Scope
GB/T 15970.9-2007 is the English-translated version of 金属和合金的腐蚀 应力腐蚀试验 第9部分：渐增式载荷或渐增式位移下的预裂纹试样的制备和应用.
GB/T 15970.9-2007 — This standard specifies the next incremental load or rising displacement design stress corrosion cracking susceptibility of the pre-crack design, preparation and the use of other content.
In this section, the term "metal" also includes alloys. Because the crack tip 0 To maintain flexibility constraints, so the pre- cracked specimens suitable for evaluation as a thin sheet or wire and other products.
Usually applied to the evaluation sheet, bars and forgings thick products. Pre- cracked specimens are also suitable for welding pieces. Through the use of pre- cracked specimens loaded monotonically increasing load point displacement means quantitative or loaded.
Pre- cracked specimens of a prominent advantage is: You can calculate the known geometry and components to withstand the stress of known critical defect size by the measured data.
If the defect size exceeds a critical value, the stress corrosion cracking may occur. Pre- cracked specimens can also be used to determine the stress corrosion crack growth rate.
A major advantage of this test is to face: Consider the potential impact of dynamic strain on stress corrosion cracking boundary values.
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Document preview — GB/T 15970.9-2007
National Standard of the People's Republic of China
- ICS
- 77.060
- Classification
- H 25
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Contents
- What this standard covers1
- Document data2
- Standards quoted by this document3
What this standard covers
This standard specifies the next incremental load or rising displacement design stress corrosion cracking susceptibility of the pre-crack design, preparation and the use of other content. In this section, the term "metal" also includes alloys. Because the crack tip 0 To maintain flexibility constraints, so the pre- cracked specimens suitable for evaluation as a thin sheet or wire and other products. Usually applied to the evaluation sheet, bars and forgings thick products. Pre- cracked specimens are also suitable for welding pieces. Through the use of pre- cracked specimens loaded monotonically increasing load point displacement means quantitative or loaded. Pre- cracked specimens of a prominent advantage is: You can calculate the known geometry and components to withstand the stress of known critical defect size by the measured data. If the defect size exceeds a critical value, the stress corrosion cracking may occur. Pre- cracked specimens can also be used to determine the stress corrosion crack growth rate. A major advantage of this test is to face: Consider the potential impact of dynamic strain on stress corrosion cracking boundary values. At sufficiently low loading rate, the method can be measured KISCC value more quickly, and this value is less than or equal to the value determined by the constant load or displacement method.
Document data
International classification (ICS): 77.060.
Chinese classification (CCS): H25.
Estimated length of the Chinese original: 26,239 words.
Adopted international standard: ISO 7539-9-2003, IDT.
Standards quoted by this document
GB/T 15970.1; GB/T 15970.6; GB/T 15970.7; GB/T 20120.2
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
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Related Standards
GB/T 15970.1-2018 — Corrosion of metals and alloys -- Stress corrosion testing -- Part 1: General guidance on testing procedures
GB/T 15970.10-2021 — Corrosion of metals and alloys - Stress corrosion testing - Part 10: Reverse U-bend method
GB/T 15970.11-2022 — Corrosion of metals and alloys - Stress corrosion cracking - Part 11: Guidelines for testing the resistance of metals and alloys to hydrogen embrittlement and hydrogen-assisted cracking
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