Hivatkozási szám

MSZ EN ISO 7539-9:2021

Dokumentumazonosító

177889

Cím

Fémek és ötvözetek korróziója. Feszültségkorróziós vizsgálat. 9. rész: Előrepesztett próbatestek készítése és használata növekvő terhelésű vagy növekvő elmozdulású vizsgálatokhoz (ISO 7539-9:2021)

Angol cím

Corrosion of metals and alloys. Stress corrosion testing. Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement (ISO 7539-9:2021)

Alkalmazási terület

1.1 This document specifies procedures for designing, preparing and using pre-cracked specimens for investigating the susceptibility of metal to stress corrosion cracking (SCC) by means of tests conducted under rising load or rising displacement. Tests conducted under constant load or constant displacement are dealt with in ISO 7539-6. The term “metal” as used in this document includes alloys. 1.2 Because of the need to confine plasticity at the crack tip, pre-cracked specimens are not suitable for the evaluation of thin products such as sheet or wire and are generally used for thicker products including plate, bar, and forgings. They can also be used for parts joined by welding. 1.3 Pre-cracked specimens can be stressed quantitatively with equipment for application of a monotonically increasing load or displacement at the loading points. 1.4 A particular advantage of pre-cracked specimens is that they allow data to be acquired from which critical defect sizes, above which stress corrosion cracking can occur, can be estimated for components of known geometry subjected to known stresses. They also enable rates of stress corrosion crack propagation to be determined. 1.5 A principal advantage of the test is that it takes account of the potential impact of dynamic straining on the threshold for stress corrosion cracking. 1.6 At sufficiently low loading rates, the threshold stress intensity factor for susceptibility to stress corrosion cracking, KISCC, determined by this method can be less than or equal to that obtained by constant load or displacement methods and can be determined more rapidly.

ICS

77.060 Fémek korróziója

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2021-12-01

Forrás

idt ISO 7539-9:2021; idt EN ISO 7539-9:2021

Előd

MSZ EN ISO 7539-9:2008

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

kapható formátuma

Papír ,
PDF (letöltés) (a fájl mérete: 1244977) ,

oldalszáma

39 oldal; R kategória

ára

Nettó: 14180 Ft
Bruttó:
Papír formátum esetén (5% Áfával): 17867 Ft
PDF (letöltés) formátum esetén (27% Áfával): 18009 Ft