Mechanical properties of the GS24Mn4 steel - Inconel 718 interface manufactured by laser metal deposition and compound casting

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-04-28 DOI:10.1016/j.matchar.2025.115102

Brian Zhan Rui Lee , Lewei He , Soon Siang Chong , Hua Li

引用次数: 0

Abstract

This work investigates the joining phenomena between GS24Mn4 steel (WCB) and Inconel 718 (IN718) manufactured by additive manufacturing and compound casting. Modified heat treatment techniques namely annealing followed by quick aging (SAA) and annealing followed by direct aging (ADA) are studied regarding their effects on the interfacial hardness and tensile strength, followed by a thorough characterization of the interface microstructure and fracture surface. It is found that both techniques meet the micro hardness specification while ADA specimens perform better in terms of their strength. Moreover, the mass dendrite porosities on the fracture surface originating from compound casting shrinkage is the main cause of premature failure. It is also observed that wide and coarse grains of IN718 at the interface causes a shift in the location of material fracture from the weaker WCB to IN718 alloy.

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激光金属沉积复合铸造GS24Mn4钢- Inconel 718界面力学性能研究

研究了增材制造和复合铸造制备的GS24Mn4钢（WCB）与IN718钢（IN718）的连接现象。研究了退火后快速时效（SAA）和退火后直接时效（ADA）两种热处理工艺对界面硬度和抗拉强度的影响，并对界面微观结构和断口形貌进行了全面表征。结果表明，两种方法均满足显微硬度要求，而ADA试样在强度方面表现更好。此外，复合铸造收缩导致的断口表面的大量枝晶孔隙是导致过早破坏的主要原因。同时观察到界面处宽而粗的IN718晶粒导致材料断口位置由较弱的WCB向IN718合金转移。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.