Study of the Residual Stress in 2A97 Al-Li Alloy Using Different Methods

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Xi^1^2^3^4 ; Liu, Changkui^1^2^3^4

AECC Beijing Institute of Aeronautical Materials, Beijing

100095, China^1

Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing

100095, China^2

Aviation Key Laboratory of Science and Technology On Materials Testing and Evaluation, Beijing

100095, China^3

Key Laboratory of Aeronautical Materials Testing and Evaluation, Aero Engine Corporation of China, Beijing

100095, China^4

关键词: Al-Li alloys;    Contour method;    Good correlations;    High-precision;    Quenching stress;    Surface stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022078/pdf
DOI  :  10.1088/1757-899X/490/2/022078

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The contour method and X-ray diffraction have been used to measure the quenching stress in 2A97 Al-Li alloy. The surface stresses were measured by X-ray diffraction. Besides, the 2-D distribution of stresses have been given by the contour method. The differences between the two methods can be more than 100 MPa. In addition, finite element model which is suitable for evaluation of residual stresses in this material was established. There is very good correlation between the contour method and finite element model (FEM). The differences are less than 50MPa. The model has high precision to forecast the residual stress in 2A97 Al-Li alloy.