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Method for obtaining constitutive parameters of zirconium alloy irradiation deformation single crystal

A zirconium alloy and irradiation technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as difficulty in obtaining single crystal constitutive parameters

Pending Publication Date: 2021-06-04
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to solve the problem that it is difficult to obtain single crystal constitutive parameters in the prior art

Method used

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  • Method for obtaining constitutive parameters of zirconium alloy irradiation deformation single crystal
  • Method for obtaining constitutive parameters of zirconium alloy irradiation deformation single crystal
  • Method for obtaining constitutive parameters of zirconium alloy irradiation deformation single crystal

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Embodiment Construction

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0049] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention relates to the technical field of heavy water reactor material equipment design and evaluation, in particular to a method for obtaining zirconium alloy irradiation deformation single crystal constitutive parameters. The method comprises the following specific steps: collecting plastic deformation test or actual measurement parameters of zirconium alloy caused by irradiation deformation; simulating observed alloy deformation by adopting a finite element method or a finite volume method on the basis of a polycrystalline irradiation deformation constitutive structure under an irradiation condition; based on the simulation result, calculating the anisotropy coefficient of the irradiation plasticity of the polycrystal; and obtaining the apparent single crystal constitutive structure by utilizing the anisotropy coefficient and combining a genetic algorithm. Compared with the prior art, the method has the advantages that the problem that the constitutive parameters of the single crystal are difficult to obtain when the radiation deformation of the nuclear-grade zirconium alloy is predicted by utilizing a mesomechanical model can be well solved; the obtained apparent single crystal constitutive parameters can be used for obtaining irradiation deformation prediction of nuclear-grade zirconium alloy.

Description

technical field [0001] The invention relates to the technical field of heavy water reactor material equipment design and evaluation, in particular to a method for obtaining constitutive parameters of a zirconium alloy irradiation deformed single crystal. Background technique [0002] When zirconium alloys are used as heavy water reactor structural materials for long-term service, the geometric shape will change, which is called radiation deformation. Predicting the radiation deformation of zirconium alloys in the subsequent period of time in the stages of material development, structural design, operation and maintenance, etc. is the fundamental requirement to ensure nuclear safety. [0003] At present, the prediction of zirconium alloy irradiation deformation is mainly based on two types of models: [0004] 1) The macro-empirical model is mainly to establish and apply the relationship between the measured results and the working condition parameters. For example, patent C...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/17G06F119/14G06F111/06
CPCG06F30/23G06F30/17G06F2119/14G06F2111/06
Inventor 赵冠楠王永东王弘昶沈耀曹昱澎石秀强刘刚
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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