高温合金熔体密度的教学过程设计  

INSTRUCTIONAL DESIGN OF DENSITY FOR THE HIGH-TEMPERATURE ALLOYMELTS

作　　者：王海鹏[1] 邹鹏飞 WANG Haipeng;ZOU Pengfei(School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an,Shaanxi 710072)

机构地区：[1]西北工业大学物理科学与技术学院,陕西西安710072

出　　处：《物理与工程》2022年第4期183-188,196,共7页Physics and Engineering

基　　金：陕西省研究生教育综合改革研究与实践项目;西北工业大学2021年度校级教育教学改革研究项目(2021JGZ15);研究生教育研究基金(批准号:20GZ220101)的资助。

摘　　要：密度是十分基本且非常重要的物理量,但密度十分常见,因此在高温合金熔体性质教学和学习过程中,常常重视不够,以致影响对高温熔体性质的认识。本文根据高温合金熔体的基本物理化学性质,创新教学方法,精心进行教学过程设计,首先以航空发动机用Inconel718合金的固态和液态密度随温度的变化作为切入点,抓住学生的学习兴趣点,进而“有设计”“有构思”地引出密度测定为什么难、如何进行实验测定、典型的密度变化规律等体系化的知识。这一教学过程设计生动形象地讲授了高温合金熔体密度的课堂内容,深化了液态金属结构与性质的教学效果。Density is a very basic and important parameter. However, because density is very common, it is usually not paid much attention in the teaching and learning process of the thermophysical properties for high-temperature alloy melts, which affects the understanding of the properties for high-temperature alloy melts. Based on the fundamental thermophysical properties of high-temperature alloy melts, the teaching method and teaching process are well designed. First, the solid and liquid densities of the Inconel718 alloy dependences on temperature are used as the starting point to grasp the students’ learning interest. And then, the systematic knowledge of why density measurement is difficult, how to carry out experimental measurement, the typical relationship between density and temperature are introduced with design and conception. This teaching process vividly introduces the content of the density for high-temperature alloy melts, and deepens the teaching effect of the structure and properties of liquid metal.

关 键 词：教学改革 教学设计 高温合金熔体 液态金属性质 密度 

分 类 号：G642[文化科学—高等教育学] TG132.3-4[文化科学—教育学]