Microstructure and Mechanical Properties of Thick‐Walled Inconel 625 Alloy Manufactured by Wire Arc Additive Manufacture with Different Torch Paths,Advanced Engineering Materials

当前位置： X-MOL 学术 › Adv. Eng. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Microstructure and Mechanical Properties of Thick‐Walled Inconel 625 Alloy Manufactured by Wire Arc Additive Manufacture with Different Torch Paths
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-09-04 , DOI: 10.1002/adem.202000728
Qi Jiang _{1,

2} , Peilei Zhang _{1,

2} , Zhishui Yu _{1,

2} , Haichuan Shi _{1,

2} , Shaowei Li _{1,

2} , Di Wu _{1,

2} , Hua Yan _{1,

2} , Xin Ye _{1,

2} , Jieshi Chen _{1,

2}

Affiliation

Wire arc additive manufacture (WAAM) technology has attracted more and more attention. WAAM technology provides a way to manufacture a large‐scale part at a low cost and with less material loss. Inconel 625 alloys are widely used for their excellent mechanical properties and corrosion resistance. Therefore, it is important to investigate the performance of Inconel 625 alloy in WAAM. Herein, cold metal transfer (CMT) arc is used as the heat source to fabricate thick‐walled parts of Inconel 625 alloy by WAAM, and study the difference between microstructure and mechanical properties under the different torch trajectories. The result shows that the grains inside the parts are all thick dendrites and show the trend of epitaxial growth. The thermal input of the oscillation additive is higher than the two‐pass multilayer additives, and the Laves phase also precipitated more. The maximum tensile strength occurs in parallel sampling close to the substrate, which is 693.5 ± 12.6 and 751.2 ± 17.6 MPa in oscillation and two‐pass multilayer modes, respectively. The maximum elongation is obtained in the vertical direction is 60 ± 1.0% and 60 ± 1.1%. The anisotropies are 4% and 4.5%, respectively. The maximum hardness value under the two torch trajectories also appears close to the substrate.

中文翻译：

不同火炬路径电弧增材制造厚壁Inconel 625合金的组织和力学性能

电弧增材制造（WAAM）技术已引起越来越多的关注。WAAM技术提供了一种以低成本和较少材料损失制造大型零件的方法。Inconel 625合金因其出色的机械性能和耐腐蚀性而被广泛使用。因此，研究InAM 625合金在WAAM中的性能非常重要。在本文中，使用冷金属转移（CMT）电弧作为热源，通过WAAM来制造Inconel 625合金的厚壁零件，并研究不同焊炬轨迹下的显微组织和力学性能之间的差异。结果表明，零件内部的晶粒均为粗枝晶，并呈现出外延生长的趋势。振荡添加剂的热输入高于两次通过的多层添加剂，Laves相也沉淀更多。最大拉伸强度发生在靠近基材的平行采样中，在振荡和两次通过多层模式下分别为693.5±12.6和751.2±17.6 MPa。在垂直方向上获得的最大伸长率为60±1.0％和60±1.1％。各向异性分别为4％和4.5％。在两个割炬轨迹下的最大硬度值也显示在靠近基材的位置。

更新日期：2020-09-04

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11