DataVXAIP AdvancesPaper
journal article·2018-05-01Open access

Intergranular stress study of TC11 titanium alloy after laser shock peening by synchrotron-based high-energy X-ray diffraction

R. Su, L. Li, Y. D. Wang, Z. H. Nie, Y. Ren, X. Zhou, J. Wang

AIP Advances· Volume 8· Issue 5
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Source abstract

Abstract

The distribution of residual lattice strain as a function of depth were carefully investigated by synchrotron-based high energy X-ray diffraction (HEXRD) in TC11 titanium alloy after laser shock peening (LSP). The results presented big compressive residual lattice strains at surface and subsurface, then tensile residual lattice strains in deeper region, and finally close to zero lattice strains in further deep interior with no plastic deformation thereafter. These evolutions in residual lattice strains were attributed to the balance of direct load effect from laser shock wave and the derivative restriction force effect from surrounding material. Significant intergranular stress was evidenced in the processed sample. The intergranular stress exhibited the largest value at surface, and rapidly decreased with depth increase. The magnitude of intergranular stress was proportional to the severity of the plastic deformation caused by LSP. Two shocks generated larger intergranular stress than one shock.
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Research context

Metals & alloys

OpenAlex topics: Surface Treatment and Residual Stress · High-Velocity Impact and Material Behavior · Erosion and Abrasive Machining

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Hebei University of Science and Technology 1 , Shijiazhuang, Hebei 050018, China

Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science 2 , Shanghai 201204, China

State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing 3 , Beijing 100083, China

School of Materials Science and Engineering, Beijing Institute of Technology 4 , Beijing 100081, China

X-ray Science Division, Argonne National Laboratory 5 , Argonne, IL 60439, USA

Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University 6 , Xi’an, Shaanxi 710038, China

Funding

Colleges and unversities in Hbei province science and technology research project · Fundament Research Fund for Advanced Metal and Materials · Fundamental Research Founds for the Central Universities · National Key Research and Development Program of China · National Natural Science Foundation of China · U.S. Department of Energy

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