Plasma deposition dieless manufacturing(PDM) is a rapid heating and solidification process,in which how to avoid cracks and distortions is a key problem.

• 等离子熔积无模成形是急速加热快速凝固的短流程制造技术,如何避免制件的热裂纹是该技术的关键,而热裂纹的产生取决于成形过程温度场与应力场的分布特征。