烧结应力研究进展

Research Progress of Sintering Stress

摘要:

就烧结应力的产生、理论值计算等方面进行阐述，并利用能量法、曲率法、力平衡法计算烧结应力的思路，综述烧结应力发展的历史和研究进展。以等粒径颗粒模型的烧结应力研究为基础，建立非等径颗粒烧结应力分析模型，用计算机模拟烧结的真实条件，对非等径颗粒粉末冶金材料或梯度粉末冶金材料的烧结应力进行分析，这是未来该类材料烧结应力研究的主要方向。

关键词:烧结应力;多孔材料;能量法;烧结力

Abstract:

The history and recent development of sintering stress of powder metallurgical materials are introduced systemically. The methods of the sintering stress calculation, including the energy difference method, the curvature method and the force balance method are stated. The present attention on the sintering stress is the ideal two-sphere model and the repeating unit cell model. But all these calculation methods or models can not reflect the sintering stress of porous materials in the factual sintering condition. So, it is essential to construct a sintering model and to develop a method to calculate the un-identical sphere model to describe the factual sintering stress. Computer simulation of sintering stress is the direction of further investigation on the un-identical sphere model.

Key words:sintering stress; porous materials; the energy difference method; sintering force