17-4PH不锈钢挤出成形制品的疲劳性能

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关键词：金属材料挤出成形；预测模型;疲劳性能;拉伸性能;填充角度；成形方向中图分类号：TG142.71DOI：10.3969/j.issn.1004-132X.2025.07.021 开放科学（资源服务）标识码（OSID）：

Fatigue Property of 17-4PH Products Fabricated via Metal Material Extrusion Technique

JIANG Shijie1，2*CAI Shanggang1YING Hongwei1CHEN Jiaqi1 1.School of Mechanical Engineering & Automation，Northeastern University，Shenyang，110819 2.Key Laboratory of Dynamics Reliability of Mechanical Equipment of Liaoning Province， Shenyang，110819

Abstract： With the expansion of the application rangs of metal material extrusion products，it was urgent to investigate their fatigue property to ensure the reliability and safety. A damage fatigue life prediction model for metal material extrusion sintered products was established considering forming orientations and filling angles.Metal material extrusion sintered specimens with diferent forming orientations and filing angles were fabricated，and their density， shrinkage rate，tensile property and fatigue property were studied. The results show that the errors between predicted and measured fatigue life are as from 1.50% to 11.83% ，which validates the correctness of the proposed model，while the shrinkage rate，tensile property，and fatigue property of the sintered specimens exhibite anisotropy.

Key words： metal material extrusion; prediction model; fatigue property; tensile property; filling angle;forming orientation

0 引言

金属材料挤出成形（metalmaterialextru-sion，MME）技术是以金属粉末/聚合物复合丝材为原料，先通过熔融沉积方式成形生坏，再经脱脂和烧结（shaping-debinding-sintering，S-D-S）工艺获得致密化纯金属零件的增材制造技术。（剩余15479字）