GB/T 28896-2012 Replaced National standards

GB/T 28896-2012 Metallic materials—Method of test for the determination of quasistatic fracture toughness of welds

Publish Date: 2012-11-05 Implement Date: 2013-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 28896-2012

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: \n Test methods for the mechanical properties of metals

ICS Name: Mechanical testing of metal materials

Publish Date: 2012-11-05

Implement Date: 2013-05-01

Pages: 41 pages

Scope

This standard specifies the specific test procedures and methods for determining the fracture toughness K, CTOD (crack opening displacement) and J integral of the weld metal and its heat-affected zone in metallic materials.
This standard is a supplement to GB/T 21143, which covers all aspects of fracture toughness testing and is closely related to this standard in its application. The fracture toughness testing methods introduced in this standard are suitable for determining the crack initiation toughness in engineering terms, but cannot be used to test the so-called crack propagation resistance curves. The test methods introduced in this standard use samples in which the metallic materials are welded and then machined to create notches and prefabricate corresponding fatigue cracks. The notches should be located in the areas to be tested of the weld metal or the heat-affected zone, and the selection of the areas to be tested and the direction of the notches is determined by the user according to the actual situation.