Construction of Materials Database on High Temperature Inelastic Behavior of Metallic Materials and the Application to Numerical Analyses

金属材料高温非弹性行为材料数据库的构建及数值分析应用

基本信息

批准号：
11555033
负责人：
INOUE Tatsuo
金额：
$ 8.38万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

项目摘要

Simulation to determine coupled fields of temperature, metallic structure and stress/strain in the course of engineering processes incorporating phase transformation, such as quenching, welding, casting and so on, needs so many material data ; thermal conductivity and specific heat for heat conduction, CCT or TTT diagram, temperature-dilatation chart for phase change, and Stress-strain constitutive relation, elastic constants, all of which depend on temperature. This project motivates the construction of a materials database cooperating with the activity of Subcommittee of Materials Database, Committee of Engineering Plasticity, the Society of Materials Science, Japan, and the evaluation of the validity and applicability to numerical simulation. More than 50 kinds of steel used for heat treatment are focused here to accumulate the following material data, which are taken from documents and experiments ; stress-strain curve under 5% strain, thermal conductivity, specific heat, elastic modulus, CCT and TTT diagram, temperature-elongation diagram. The database tool built on MS-Excel is designed in a hierarchical structure so that users can easily approach, and the material data in the developed database are converted to a database, MATEQ.This database contains more than 1000 kinds of data series for s-s curves and 50-100 for other properties, which triggers future development of more sophisticated database. The validity of the database and applicability to numerical simulation is also examined by simulating several kinds of processes with phase transformation.

在工程过程中确定温度，金属结构和应力/应变的耦合场的仿真，包括相变的工程过程，例如淬火，焊接，铸造等，需要如此多的物质数据；用于热传导，CCT或TTT图，相变的温度稀释图以及应力 - 应变构成关系，弹性常数，所有这些均取决于温度。该项目激发了与材料数据库小组委员会，工程可塑性委员会，材料科学学会，日本材料委员会的活动以及对数值模拟的有效性和适用性的评估。在这里集中了50多种用于热处理的钢，以积累以下材料数据，这些数据是从文档和实验中获取的；应力 - 应变曲线在5％应变下，导热率，比热，弹性模量，CCT和TTT图，温度延长图。基于MS-EXCEL构建的数据库工具是在层次结构上设计的，以便用户可以轻松接近，并且已将开发的数据库中的材料数据转换为数据库，MATEQ.MATEQ.MATEQ.THINS数据库包含S-S曲线的1000多种数据系列，以及其他属性的50-100，用于其他属性，这触发了更复杂的数据库的未来开发。还可以通过模拟具有相变的几种过程来检查数据库的有效性和对数值模拟的适用性。