Printability disparities in heterogeneous material combinations via laser directed energy deposition:a comparative study

扫码查看

原文链接

万方数据
维普

外文摘要：Additive manufacturing provides achievability for the fabrication of bimetallic and multi-material structures;however,the material compatibility and bondability directly affect the parts'formability and final quality.It is essential to understand the underlying printability of different material combinations based on an adapted process.Here,the printability disparities of two common and attractive material combinations(nickel-and iron-based alloys)are evaluated at the macro and micro levels via laser directed energy deposition(DED).The deposition processes were captured using in situ high-speed imaging,and the dissimilarities in melt pool features and track morphology were quantitatively investigated within specific process windows.Moreover,the microstructure diversity of the tracks and blocks processed with varied material pairs was comparatively elaborated and,complemented with the informative multi-physics modeling,the presented non-uniformity in mechanical properties(microhardness)among the heterogeneous material pairs was rationalized.The differences in melt flow induced by the unlike thermophysical properties of the material pairs and the resulting element intermixing and localized re-alloying during solidification dominate the presented dissimilarity in printability among the material combinations.This work provides an in-depth understanding of the phenomenological differences in the deposition of dissimilar materials and aims to guide more reliable DED forming of bimetallic parts.

外文关键词：

directed energy depositionprintabilitymicrostructuremicrohardnessbimetallic parts

作者：

Jinsheng Ning、Lida Zhu、Shuhao Wang、Zhichao Yang、Peihua Xu、Pengsheng Xue、Hao Lu、Miao Yu、Yunhang Zhao、Jiachen Li、Susmita Bose、Amit Bandyopadhyay

展开 >

作者单位：

School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,People's Republic of China

School of Machinery and Automation,Wuhan University of Science and Technology,Wuhan 430081,People's Republic of China

School of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an 710054,People's Republic of China

Beijing Institute of Space Launch Technology,Beijing 100076,People's Republic of China

W.M.Keck Biomedical Materials Research Lab,School of Mechanical and Materials Engineering,Washington State University,Pullman,WA 99164,United States of America

展开 >

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for Central Universities

项目编号：

5197511252375412N2203011

出版年：

2024

DOI：

10.1088/2631-7990/ad172f

极端制造(英文)

CSTPCDEI

ISSN：

年,卷(期)：2024.6(2)