Fracture Toughness and Thermal Investigations of Al 7075 — Cobalt Particulates Reinforced Alloy Composites Prepared Using High Vacuum Casting Method for Gear Applications: Proposed Thermal Conductivity and Fracture Toughness Modeling

被引：0

作者：

Ashiwani Kumar

Mukesh Kumar

机构：

[1] Department of Mechanical Engineering,Department of Mechanical Engineering

[2] F.G.I.E.T.,undefined

[3] M.N.I.T.,undefined

来源：

International Journal of Metalcasting | 2023年 / 17卷

关键词：

Al 7075 alloy; fracture toughness; thermal conductivity; cobalt particulates; dynamic mechanical analysis (DMA); thermo-gravimetric analysis (TGA); modeling;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This work reports thermo-mechanical, thermo-gravimetric, thermal conductivity, and fracture toughness behavior of Cobalt particulates (0–2wt% @ step of 0.5%) reinforced Al 7075 alloy composites fabricated via a high vacuum casting method for gear materials. The experimentally evaluated results show that thermo-mechanical and thermo-gravimetric magnitudes improve with reinforcing phase content. The fracture toughness measured experimentally at various crack lengths of 1, 3, and 5 mm was found to be in the range of 1.69–4.07 MPa.m1/2 and shows a rising trend with particulate content, while thermal conductivity (range 130–120 W/m°K) shows the diminishing trend. A theoretical model of both characteristics was proposed and validated with an error of ~ 4%.

引用

页码：1970 / 1981

页数：11