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Register a new userStudying the Influence of Solidification speed on the Resulting Microstructure of Hadfield steel castings
دراسة تأثير سرعة التصلب على البنية الناتجة لمسبوكات فولاذ هادفيلد
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Aِl-Baath University رسالة ماجستير
Publication date
2019
and research's language is
العربية
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فولاذ هادفيلد يستخدم بشكل واسع في التطبيقات الصناعية نتيجة لمقاومته الجيدة للاهتراء , وقدرته العالية على التصلد الانفعالي مع متانة صدمية ومطيلية عاليتين
Hadfield steels have extensively applications in industries due to good resistance to wear , high work hardening capability with high impact toughness and ductility.
References used
سالم , رائد وخيو , نجية , 2013 , تأثير المضافات على خواص القوالب الرملية المستخدمة لصب حديد الزهر الرمادي , المجلة العراقية لهندسة الميكانيك والمواد , المجلد الثالث عشر
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This experimental study aims to improve the quality of carded web
on advanced carding machine in Syrian spinning society.
The Effect of Speed of card on the web quality Statistically
analysed, the data indicate that all main parameters studied hav
e an
influence on web quality.
Furthermore it has been shown that there is a strong correlation
between the incident of neps and the increasing in the short fiber
content during increasing speed carding
Subsequently increase speed of card hasan effect negative on
Mechanical properties that are usualy the major contributer on the
yarn quality and its commercial value.
Fluorescence spectroscopy has long been one of the most useful
bio-physical techniques available to scientists studying the
structure and function of biological tissues due to high sensitivity
of fluorescence signal to variations of optical properties of tissues
as a result of structural variations.
The influence of thermomechanical treatments on the microstructural properties of stainless steel D9 alloy
steel was studied.
This research presents an experimental study about the effect of steel fibers on the
main variables of stress- strain curve for high strength concrete on simple compression,
which are: shape of stress- strain curve, ductility factor, energy absorpt
ion capacity. For
this purpose, series of cylinders concrete specimens were prepared in compressive strength
(70 MPa). the steel fiber with aspect ratio of L/D =70 were added at the volume fractions
of (0-1-1.5-2)%. The cylinders were tested under a monotonic loading at compression, and
as a result of the tests, the total curve of stress- strain was obtained. The experimental
results of research showed a positive effect of steel fibers on the behavior of high strength
concrete, this effect increased with increasing volume fraction of steel fibers. It can be seen
from stress-strain curve, whereas the slope of the ascending branch is not much affected.
The descending branch of the stress- strain curve decreases by the increase in the fiber
volume fraction. This means the ductility and toughness improve with the addition of steel
fibers and as a result the behavior of high strength concrete has gone far away from being
brittle as it is used to be.
يعتبر القطن ( Gossypium s. p. p. ) من أهم المحاصيل الاستراتيجية في سورية حيث يعمل أكثر من مليوني شخص في زراعة وصناعة وتجارة محصول القطن .
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