Study on Bonding Properties of Different Surfacing Layer Metals with 45 Steel Base Metal

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-05-06 DOI:10.1007/s11223-024-00632-w
F. Huang
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Abstract

Austenite steel, Nb-bearing alloy steel, and high-Cr alloy cast iron surfacing layers (SL) were grown on 45 steel base metal (SBM) by using the arc surfacing method with self-shielded flux-cored welding wire and fusion electrode, and the composition and microstructure of these SLs were analyzed. The criss-cross push-off (CCPO) specimens for each type were processed, and the bonding property between SLs and 45 SBM was measured using a customized CCPO test. The fracture path and fractograph characteristics were also investigated using a metallographic and scanning electron microscope. The experimental results indicated that the bonding strength (BS) of austenite steel SLs and 45 SBM was the highest (465 MPa); the fracturing sites were near the fusion line, and the fracture exhibited cleavage fracturing features. The BS of niobium-bearing alloy steel and 45 SBM was 310 MPa, and the fracture was at the bottom of the SLs and exhibited quasi-cleavage fracturing features. The BS of the alloy cast iron SLs and 45 SBM was 175 MPa, and the fracture was at the bottom of the SLs and showed brittle fracturing features.

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不同堆焊层金属与 45 钢基体金属的粘接性能研究
通过使用自保护药芯焊丝和熔化电极的电弧堆焊方法,在 45 钢母材(SBM)上生长了奥氏体钢、含铌合金钢和高铬合金铸铁堆焊层(SL),并分析了这些堆焊层的成分和微观结构。对每种类型的十字交叉推移(CCPO)试样进行了处理,并使用定制的 CCPO 试验测量了 SL 与 45 SBM 之间的结合性能。此外,还使用金相显微镜和扫描电子显微镜研究了断裂路径和断口特征。实验结果表明,奥氏体钢 SLs 和 45 SBM 的结合强度(BS)最高(465 兆帕);断裂部位靠近熔合线,断口呈现劈裂断裂特征。含铌合金钢和 45 SBM 的 BS 为 310 MPa,断口位于 SL 的底部,并呈现准劈裂断裂特征。合金铸铁 SLs 和 45 SBM 的 BS 为 175 MPa,断口位于 SLs 的底部,呈现脆性断裂特征。
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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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