Effect of Addition Percentage Zn on Mechanical Properties of Alloy Zn - Al

Sari

Aluminum is a light metal that has good corrosion
resistance and good electrical conductivity.
Aluminum usage is expected in the future still widely
open both as the main material and supporting
materials with the availability of aluminum seeds in
the abundant earth. By looking at the importance of
the role of material selection in the advancement of
manufacturing and assembling industry, the writer
considers it necessary to conduct scientific
publication on alloy material with various laboratory
testing processes. The purpose of this research is
conducting mechanical testing and metallographic
testing on some type of percentage of Zinc-
Aluminum material. The writer considers to
conductalloying of Zinc-Aluminum using sand
casting technique with alloy composition: 1. Zn 25%
- Al 75%, 2. Zn 50% - Al 50%., 3. Zn 75 % - Al
25%. The method used in this study is to calculate
and analyze the influence percentage of Zn addition
to mechanical properties of aluminum-zinc alloys
(Al-Zn). However, now its use is very widespread
even it is difficult to describe how the development
aviation industry without aluminum. Aluminum is a
highly stable oxide that cannot be reduced by
reducing other metals. For aluminum-zinc alloys (Al
75% - Zn 25%) it can be seen that the greater the
stress value, the greater the strain value. This is
influenced by the value of loading and extension that
occur. For aluminum-zinc alloys (Al 50% - Zn 50%)
it can be seen that the greater the stress value will be
followed by increasing the strain value, this is
influenced by the loading and extension values that
occur. For aluminum-zinc alloys (Al 25% - Zn75 %)
it can be seen that the greater the stress value
followed by an increase in the value of strain, this is
influenced by the value of loading and extension that
occurred.