Investigation into the room temperature creep-deformation of potassium dihydrogen phosphate crystals using nanoindentation

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ID: 113135
2018
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Abstract
It has been a tremendous challenge to manufacture damage-free and smooth surfaces of potassium dihydrogen phosphate (KDP) crystals to meet the requirements of high-energy laser systems. The intrinsic issue is whether a KDP crystal can be plastically deformed so that the material can be removed in a ductile mode during the machining of KDP. This study investigates the room temperature creep-deformation of KDP crystals with the aid of nanoindentation. A stress analysis was carried out to identify the creep mechanism. The results showed that KDP crystals could be plastically deformed at the nano-scale. Dislocation motion is responsible for creep-deformation. Both creep rate and creep depth decrease with decrease in peak force and loading rate. Dislocation nucleation and propagation bring about pop-ins in the load-displacement curves during nanoindentation.
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zhang2018advancesinvestigation Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yong Zhang;Ning Hou;Liang-Chi Zhang;Yong Zhang;Ning Hou;Liang-Chi Zhang;
Journal advances in manufacturing
Year 2018
DOI
doi:10.1007/s40436-018-0234-9
URL
https://link.springer.com/article/10.1007/s40436-018-0234-9
Keywords
manufacturing control Machines Tools Processes Robotics Mechatronics nanotechnology and microengineering

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