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Is the steel strain hardening exponent temperature dependent?
Jmoorman
yes, with increased temp, the s.h.e decreases
hi
According to your answer . I must say that as I know , when we anneald metals ( e.g. Iron ) the S.H.E increased while you can decreas it by cold-work .
Wiki User
∙ 15y ago
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What is heat strain?
heat strain or the thermal strain is caused due to the temperature changes. A solid body expands as the temperature increases and contracts as the temperature decreases.this causes the thermal strain. for a homogeneous and isotropic body the thermal strain is caused by change in temperature. thermal strain = coefficient of linear thermal expansion * change in temperature where the coefficient of linear thermal expansion gives the strain per degree of temperature.
Why not DNA act as primer in place of DNA during DNA replication?
In case you are talking about Polymerase chain reaction; you melt the double strain from each other by raising the temperature. By lowering the temperature, DNA will melt together again. This would happen with the complement strain or with primers. But due to the length of the primer it will bind the matching sequence a lot faster than the complement strain. this is also balanced by strict temperature regulations during a PCR cycle. * and ofcourse you dont replicate anything if the whole complement strain attaches!
Are all minerals brittle?
This depends on the confining pressure, the temperature and the strain rate applied to the mineral. In general for minerals (and other materials), the lower the rate of strain, the more likely ductile or plastic creep deformation will occur. The higher the strain rate, the more likely brittle deformation is to occur. As the confining pressure increases, an objects shear strength will increase (this usually coincides with a greater depth of burial) and due to the earth's thermal gradient an increase in temperature. As the shear strength increases, brittle failure is less likely and the higher temperature means that plastic deformations or creep are more likely to occur.
What is a sentence for non-newtonian fluids?
A non-Newtonian fluid is a fluid whose flow properties are not described by a single constant value of viscosity. Many polymer solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup, starch suspensions, paint, blood and shampoo. In a Newtonian fluid, the relation between the shear stress and the strain rate is linear, the constant of proportionality being the coefficient of viscosity. In a non-Newtonian fluid, the relation between the shear stress and the strain rate is nonlinear, and can even be time-dependent. Therefore a constant coefficient of viscosity can not be defined. A ratio between shear stress and rate of strain (or shear-dependent viscosity) can be defined, this concept being more useful for fluids without time-dependent behavior.
What is transformed from rough strain bacteria to smooth strain cells?
DNA
What has the author G R Cowper written?
G. R. Cowper has written: 'Strain-hardening and strain-rate effects'
Is there any difference between work hardening and strain hardening?
In strain hardening hypothesis, the size of the yield locus is assumed to beindependent of the third invariant.In work hardening hypothesis, the size of the yield locus is assumed to depend on the total plastic work done (per unit volume) to achieve the present state of plastic deformation since last annealinfor isotropic hardening Both are same.
What is heat strain?
heat strain or the thermal strain is caused due to the temperature changes. A solid body expands as the temperature increases and contracts as the temperature decreases.this causes the thermal strain. for a homogeneous and isotropic body the thermal strain is caused by change in temperature. thermal strain = coefficient of linear thermal expansion * change in temperature where the coefficient of linear thermal expansion gives the strain per degree of temperature.
In metallurgy what is hot shortness in steel?
The term is used for character of steel, which become brittle at hot working temperature ie above 0.6 Tm (recrystallization temperature, where strain hardening is removed ) hot short hinders in hot working operation, often caused by the presence of sulphur in metal.
What is cold forming?
Cold forming refers to the strengthening of metal through plastic deformation. It is also known as strain hardening or cold working.
Why stress increased again after lower yield point?
hi dear, yes its true that stress increases after lower yield for ductile material. it happens due to reason of strain hardening. strain hardening is the property of the material with which the grain structures presents in the body forms bond between them. so in order to break that bonds, the stress increases after lower yield point..
Why the stress value is taken on y axis not on x axis as it is the cause and strain is effect so why not it is taken on x axis and strain on y axis?
in any graph on horizontal axis we keep the independent variable and on vertical axis the dependent variable. similarly in stress strain diagram the strain is independent variable and stress is dependent variable so due to this reason strain is kept on x-axis and stress is kept on y-axis.
Difference between unbonded strain gauge and bonded strain gauge?
The essential difference is that the bonded strain gauges are bonded on to the specimen whose strain is being measured whereas the unbonded strain gauges are not bonded on to the specimen. As the bonded strain gauges are well bonded on to the specimen, the entire strain being experienced by the specimen is transferred to the strain gauge. However, the bonded strain gauges are affected by temperature changes and also due to transverse strains.For transverse strains and ambient temperature compensations, suitable circuits for compensation can be used using Wheatstone's bridge. The unbonded strain gauges cannot transfer the strain of the specimen to the strain gauge and hence it is used mainly for displacement, or pressure or force transducers. It is least affected by transverse strain and temperature compensation of unbonded gauges cis automatically eliminated using Wheatstone's bridge.
What is strain hardening?
When ductile material is loaded, when stress reaches yield and if the load continues, as long as load is not high enough to break material, the material is strain hardened when returning to no load. That means its yield strength will be higher than before, and the material is stronger.
How is aluminium made more hard wearing?
Pure aluminum can be hardened by a technique known by several names: work hardening, strain hardening, cold working or cold forming. Usually, if aluminum is going to be used in a situation where wear is present, an aluminum alloy will be used in preference to pure aluminum.
What is principle of strain gauge?
change in temperature causes change in pressure
When does the yield strength of a rectangular metal wire say stainless steel or titanium wire increase?
If you work it beyond the yield point then you raise the yield point in a process called strain hardening
