用于形状记忆材料研究的中子衍射原位温度加载系统  

Neutron diffractometer in-situ temperature loading system for shape memory materials study

作　　者：庞蓓蓓[1,2] 张莹[1,2] 王虹[1,2] 席治国[1] 张洁[1,2] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900 [2]中国工程物理研究院中子物理学重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2014年第10期241-245,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点项目(51231002)

摘　　要：配合中国工程物理研究院的中子衍射应力谱仪开展形状记忆材料的相关研究，设计了一套原位温度加载系统。该系统可为测量样品提供25～800℃温度环境，温度控制器采用大林改进算法，有效地消除了温度过冲问题。该系统已开展了多次带束测试，结果表明其结构设计适用于中子衍射实验，温度控制在上升阶段无超调、稳态误差为±1℃．满足形状记忆材料的温度加载实验要求。An in-situ temperature loading system was designed. It can control the sample＇s temperature from 25 ℃ to 800 ℃, and the temperature controller applied improved Dahlin algorithm to inhibit temperature overshoot. The system was tested with neutron beam on the residual stress neutron diffractometer. The result shows that the structure suits for neutron diffraction experiment, and the temperature keeps not higher than the target during the ascending period, and the precision is ±1℃ during the stable period, which meets temperature loading requirements for shape memory materials.

关 键 词：形状记忆材料 中子衍射 原位加载 温度控制 温度过冲 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]