T/CEEMA 0204-2023 Active Group standards

T/CEEMA 0204-2023 "Additive manufacturing laser cladding layer crack resistance test and evaluation technical specification"

Publish Date: 2023-11-30 Implement Date: 2023-11-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CEEMA 0204-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Generator sets

Publish Date: 2023-11-30

Implement Date: 2023-11-30

Pages: 10 pages

Scope

Scope: This document specifies the terms and definitions, testing and evaluation methods for the crack resistance of laser cladding layers in additive manufacturing. This document is applicable to the testing and evaluation of the crack resistance of laser cladding coatings in additive manufacturing; Main technical content: Laser cladding additive manufacturing is an advanced remanufacturing technology that uses high-energy laser beams to restore or optimize the geometry or mechanical properties of the base material with minimal impact on it. In order to pursue higher strength and toughness of the cladding coating materials, attention has been focused on their crack resistance. According to classical fracture mechanics theory, under non-ideal conditions, defects in the material will fracture when subjected to stress, and fracture toughness is defined to measure the material's crack resistance. For thin film materials in the nanometer to micrometer range, conventional testing equipment is difficult to accurately measure. With the rapid development of instrumented nanoindentation and computer technology, the use of nanoindenters has become a major means of nano-mechanical characterization. However, testing the material's crack resistance using this technology is easily affected by many factors such as instrumentation, sample materials, environment, and evaluation methods, which make it difficult to standardize the evaluation criteria for crack resistance. Therefore, there is an urgent need to standardize the crack resistance testing of laser cladding materials in additive manufacturing. Currently, there are domestic testing standards for nanoindentation technology, including: GB/T 22458-2008 General Methods for Instrumented Nanoindentation Experiments; GB/T 25898-2010 Instrumented Nanoindentation Test Methods for Film Materials: Indentation Hardness and Elastic Modulus; GB/T 37900-2019 Test Methods for Ultra-Thin Glass: Hardness and Fracture Toughness by Small Loa