XRD can be used to characterize the residual stress distribution of crystalline materials based on the calculation of the crystal lattice parameters. But how can we measure the residual stress with cold rolled amorphous ribbons or shot peened glassy rods with no crystalline structure by experiments?
Dear Hongwang Yang:
Here it is:
https://ttu-ir.tdl.org/bitstream/handle/2346/20230/31295005908198.pdf?sequence=1
https://www.researchgate.net/publication/222826568_Modeling_and_Measurement_of_Residual_Stresses_in_a_Bulk_Metallic_Glass_Plate
Dear Hongwang Yang:
Some auxiliary info is presented below:
https://www.researchgate.net/publication/241113305_Effect_of_residual_stresses_on_the_hardness_of_bulk_metallic_glasses
How are residual stresses measured?
Residual stress measurement by hole drilling method Hole drilling is the most commonly used stress relaxation technique for measuring residual stresses. Stressed material is removed by drilling a small blind hole in the area of interest and the material around the hole spontaneously finds a new stress equilibrium.
What is residual stress in metal?
Residual stresses are those stresses that remain in an object (in particular, in a welded component) even in the absence of external loading or thermal gradients. In some cases, residual stresses result in significant plastic deformation, leading to warping and distortion of an object.
How do you get rid of residual stress in metal?
How can remove residual stress in metal? Just heat it for several hours at a given temperature for each metal to make dislocations free or removed, and for homogenization of grain. Typically, heat treatment (annealing process) removes internal stresses.
Are residual stresses always harmful?
Residual stresses can be beneficial or detrimental, depending on whether the stress is tensile or compressive. Tensile residual stresses can be large enough to cause component distortion or cracking.
Please check the fully-ready preprint article DOI: 10.13140/RG.2.2.27720.65287/3, Title: Qualitative Analyses of Thin Film-Based Materials Validating New Structures of Atoms
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