李华,倪允强,李明磊,张长春,孙玉成,张军利,孟晓曦,闫琴,贾浩琳,张桂英,李润中

• 1:潍柴动力股份有限公司

摘要(Abstract)：

激光选区熔化(SLM)技术由于工艺流程精简，复杂结构成形能力强等特点得到越来越广泛的关注和应用，然而其成形效率相对较低成为制约其发展的主要因素，目前提高设备成形幅面是改善这一问题的重要方式之一。316L是金属增材制造最常用的材料之一，在SLM成形基板的不同位置打印多角度316L试样来讨论大幅面下SLM技术的成形能力，结果表明单激光长焦距扫描并未引起幅面内不同位置试样致密度和抗拉强度的显著差异，平行于基板平面上的切应力并未引起抗拉强度降低。热处理降低了成形态316L的位错密度从而降低了抗拉强度，继续提高热处理温度会有颗粒状碳化物析出，这会影响材料的耐腐蚀性能，而达到固溶温度后，析出相溶解入基体材料，综合力学性能和耐腐蚀性能均可得到提升。

关键词(KeyWords)： 增材制造;316L;大幅面成形;多角度成形;热处理

Abstract:

Keywords:

基金项目(Foundation): 潍柴动力股份有限公司工艺研究项目[1002222028/激光选区熔化(SLM)TC4/316L合金研究]

作者(Author): 李华,倪允强,李明磊,张长春,孙玉成,张军利,孟晓曦,闫琴,贾浩琳,张桂英,李润中

DOI: 10.14147/j.cnki.51-1396/tg.2025.03.001

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