Anisotropic high cycle fatigue behavior of Ti-6Al-4V obtained by powder bed laser fusion

被引：105
作者：
Nicoletto, Gianni [1 ]
机构：
[1] Univ Parma, Dept Ind Engn, Parco Area Sci 181-A, I-43124 Parma, Italy
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2017年 / 94卷
关键词：
Fatigue; Ti-6Al-4V; Powder bed fusion; Miniature specimen; Microstructure;
D O I：
10.1016/j.ijfatigue.2016.04.032
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An original fatigue test methodology aimed at PBF materials is presented and directed to the evaluation of the anisotropic fatigue behavior of DMLS Ti6Al4V. The presence of such anisotropy is intrinsic to the specific and complex microstructure obtained by the layer-by-layer development of the part produced by DMLS. Comparison of the present test results with data obtained with a variety of test methods and test parameters clarified the role of intrinsic (material-dependent) and extrinsic (test-method dependent) factors on the measured fatigue behavior. The proposed testing method permits substantial cost saving in terms of material and process time, benefits that are especially welcome for developmental studies of PBF alloys and process parameters. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：255 / 262
页数：8
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