Home FOR AUTHORS Kovove Materialy-Metallic Materials 2017 Metallic Materials Vol. 55 (2017), no. 1, pp.57-67

Journal info

Select Journal

Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

Metallic Materials Vol. 55 (2017), no. 1, pp.57-67

Title: The effect of cryogenic treatment on ageing behaviour of B4C reinforced 7075 aluminium composites

Abstract: In the current study, an effect of cryogenic treatment on the ageing of a B4C particulate reinforced 7075 aluminium alloy was investigated to identify changes in hardness with respect to ageing time. To achieve this, first, 10, 15, and 25 % by weight B4C particulate containing 7075 Al composite specimens were produced by hot pressing of Al, Cu, Zn, and Mg elemental powders. Next, cryogenic treatment and multiple steps of tempering were adapted to several samples. Such as, after solutionizing at 470 °C and sub-zero treatment at –146 °C, successive intervals of artificial ageing at 120 °C for different time periods were applied. During the heat treatment, hardness values were measured after each interval. Findings reveal that, particularly after solutionization, cryogenic treatment before ageing yields high hardness values. However, the hardness of the composite material exceeds this level during ageing treatment, mainly after long ageing times.

Keywords: B4C particles, aluminium composite, sub-zero treatment, cryogenics, ageing
Published online: 14-Mar-2017
Year: 2017, Volume: 55, Issue: 1 Page From: 57, Page To: 67

download file

© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.