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Register a new userImproving of The Properties of Composite Material (Aluminum Matrix) stainless Steel A304 Wires Reinforced with Medium Diameters
تحسين خواص مادة مركبة ذات اساس معدني (المنيوم) مقواة بأسلاك شعرية من الفولاذ A304 بأقطار متوسطة
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نتيجة التقدم الصناعي الذي شهده هذا العالم في كافة المجالات، تم العمل على انتاج مواد جديدة تمتلك خواص هندسية متميزة بكلفة اقتصادية منخفضة، لذا قمنا بهذا البحث بتحضير مادة مركبة ذات أساس معدني (ألمنيوم 6061) مقواة بأسلاك فولاذ مقاوم للصدأ A304.
As a result of the industrial progress absolved by the world in all fields, new materials have been produced that have excellent engineering properties at low economical cost. Therefore, we have done this research by greening a composite material with a metal base (aluminum 6061) reinforced with stainless steel wire A304.
References used
R. B. Bhagat (1988), High pressure squeeze casting of stainless steel wire reinforced aluminum matrix composites, Composites, Vol. 19, Issue 5, pp393-399
Noor, (2008) ،Microstructural Study of Al-Si-Mg Alloy Reinforced with Stainless Steel Wires Composite via Casting Technique, Malaysia, University Malaysia Perlis,721-725P
Lee, Yeon, Kang, (2011) ،Fabrication Of Aluminum Composites Reinforced With Stainless Steel Truss Structure, Korea, Chonnam National University,1-4P
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This research includes an experimental study for the manufacture of
a composite material based on polymer (unsaturated polyester),
reinforced with random fiberglass at different weight fractions. By
suite, it has been studied some mechanical prope
rties of the models
manufactured, to determine the effect of glass fiber content on the
tensile strength, hardness and impact resistance. This study has
shown that the best results were for samples reinforced by 40%
fiberglass, where the tensile strength increased about 70%, hardness
up to 30%, and impact resistance about 43%. It will be observed
that the mechanical properties decrease clearly at 60% of weight
fraction of fiberglass. This fact can be related to the quantity of
unsaturated polyester become inadequate for recharge of the fibers,
which leads to weakness in the forces bonding in composite
materials.
In this work, Ck85 carbon steel was subjected to cyclic heat
treatment.
Process that consisted of cyclic short-duration (3.4 minutes)
holding at 800 C (above Ac3 temperature) followed by forced air
cooling. After 8 cycles (about a total 1 hour du
ration of heating and cooling cyclic), the microstructure mostly contained fine ferrite
grains and spheroidzed cementite. This microstructure possessed
an excellent combination of strength and ductility. The disintegration of lamellar pearlite through dissolution of cementite
at boundaries lamellar during short-duration holding above Ac3
temperature, and the generation of lamellar defects during nonequilibrium forced air cooling were the main reasons of
accelerated spheroidization. The strength initially increased mainly
due to the presence of finer microconstituents (ferrite and pearlite)
and then marginally decreased with the elimination of lamellar
pearlite and appearance of spheroid cementite in the microstructure.
The use of composite materials, and modern technology of plasma
spraying has provided a possibility to obtain a coating with very special
properties. Owing to physics- chimecs changes, changeable valence, low
thermodynamic strength for Ferro-oxide
s the coating, which made from
Ferro oxide composite, has very high specifications investment, and
provides protection for machines which work in difficult circumstances.
Ferro oxide composites behavior, during spraying, studies shows that
changes which took place in these materials are similar to those which
happened during sintering. An influence of plasma generator current
intensity has been studied on microhardness of forming phases, on phases
structure propositions, and on porosity. Microhardness increase when
current intensity was increased, while porosity is decreased.
Wear resistance has also been studied for this post in both, dry and wet
(oily) friction circumstances. Comparable with other materials it has been
found that Ferro oxide materials had a high resistance for wear and a low
friction coefficient.
It is also important that when selecting the spraying materials, to
determine requirements which we need from coating and to analyze its
investment circumstances on specific elements of machines to obtain a
high investment properties coating.
The influence of thermomechanical treatments on the microstructural properties of stainless steel D9 alloy
steel was studied.
This paper aims at studying the influence of gangue aiid researching in the
theoretical empirical methods in order to limit the formation of such gangue
during the manufacture of steel. Gangues are divided to acids, sulfate and
compound gangue. Su
ch gangues are known for their bad influence on the
mechanical characteristics of steel. Experiments have proved that the
influence of Sulfur gangue especially FeS is worse than that of acids, as the
melting point is 880t. Such gangue form capillary ducts within steel, thus
there will be internal micro cleaves and stress points that will lead to
collapse and break when the metal is exposed to stress less than the flowing
point which is considered within the allowed stress values.
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