Test and analysis of fracture toughness of Ti-Al-Zr titanium alloy
- 1. College of Material Science and Engineering in Chongqing Univ., Chongqing (China)
- 2. Nuclear Power Inst. of China, Chengdu (China). National Key Laboratory of Nuclear Fuel and Material
Description
In order to measure the fracture toughness of Ti-Al-Zr alloy forging of low-strength and high-toughness, this report firstly tries to get the value of KIC by testing the compact tensile sample according to GB 4161-84 Standard Test Method for Plane-strain Fracture Toughness of Metallic Materials. The test found that the sample is in the apparent situation of plane stress. After analyzing the reason, authors test the value of the crack tip opening displace (COD) of every sample using multiple samples according to GB/T 2358-1994 Test Method for Crack-tip Opening Displacement Measurement of Metallic Materials. A resistance curves (δR curves) and the equation of the curves are obtained by processing the data of six effective samples. Then crack-tip opening displacement of initial crack points (Δa=0) and fracture toughness KIc of such titanium alloy are calculated. After SEM analysis of crack samples, various factors influencing the fracture toughness of Ti-Al-Zr alloy was discussed, and an approach to improve the fracture toughness of such titanium alloy was presented
Additional details
Publishing Information
- Journal Title
- Nuclear Power Engineering
- Journal Volume
- 24
- Journal Issue
- 5
- Journal Page Range
- p. 439-444
- ISSN
- 0258-0926
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 36033313
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; CRACKS; FORGING; FRACTURE PROPERTIES; MATERIALS TESTING; MICROSTRUCTURE; PLASTICITY; SCANNING ELECTRON MICROSCOPY; STRAINS; TITANIUM ALLOYS; ZIRCONIUM ALLOYS
- Descriptors DEC
- ALLOYS; ELECTRON MICROSCOPY; FABRICATION; MATERIALS WORKING; MECHANICAL PROPERTIES; MICROSCOPY; TESTING; TRANSITION ELEMENT ALLOYS