Influence of Ca, Sb and heat treatment on AlSi9CuMnNi alloy in frame of their properties from view of machining

Nataša Náprstková,Pavel Kraus,Tuong Nguyen Van,Jan Sviantek,D Stančeková,V Tlach,A Rudawska,J Mrázik,J Szabelski,N Čuboňová,M Vaško,A Sapietová

doi:10.1051/matecconf/201824402003

Abstract

Treatment of metal alloys is one of the ways to affect the quality and properties of the material At the Faculty of Mechanical Engineering of the Jan Evangelista Purkyně University in Ústí nad Labem, one part of the research consists of searching for the influence of various modifying and inoculating elements on selected aluminium alloys. One of the alloys undergoing the present research is the hardening aluminium alloy AlSi9CuMnNi. The article describes one from these experiments, than AlSi9CuMnNi alloy was modified with various amounts of calcium (0.05, 0.1 and 0.15 wt. % Ca) and 0.2 wt. % Sb. The alloy without modification and with 0.2 wt. % Sb was heat-treated, too. In the experiment were made three castings for each type of alloy. Experimental samples were evaluated form view of final hardness, were machined, too and there were analysed tool wear of using cutting inserts and final ship from machining (turning). Presented experiments are part of the extensive research undertaken at FME at JEPU in Ústí nad Labem.

Highlights

For various reasons, the alloy are adjusting, which applies to aluminum alloys
Other step was measuring of cutting inserts tool wear after cutting of individual alloys
The main reason was that the machined samples were from aluminium alloy, and the time during which the plate was in the work was about 25 minutes

Summary

Introduction

The alloy are adjusting (alloyed, inoculated and modified), which applies to aluminum alloys. One of them is research the effect of different amounts of selected elements to certain aluminum alloys and using of heat treatment, if it is possible, in particular of Al-Si alloys. In this case investigated elements were Ca and Sb and investigated alloy AlSi9CuMnNi. [1,2,3] These elements improve the morphology of silicon in the Al-Si alloy. Modification changes the morphology and size of crystals of silicon (in the case of Silumin), causing a significant increase in mechanical properties compared to unmodified alloys. The article describes the one part of the experiments that are carried out at FME JEPU in Usti nad Labem in presented area based on the requirements of companies and deals with the analysis of tool wear after experimental alloys machining (turning) and their final chips

Experiment

Results and discussion

Conclusion