Why austempered can have higher toughness than quenched and tempered in steel?

06 July 2017 193 0 View

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04 May 2017 7,211 2 View

What's physical meaning of fatigue endurance limit?

11 December 2016 7,527 0 View

Some questions about the plane strain and plane stress state?

in the plain strain state definition, the Z-direction has stress ,but no strain. is it possible a direction have stress but no strain? likewise, for the plane stress state, there has strain ,but...

10 November 2016 7,311 0 View

What kinds of characteristics those fracture surfaces have?

09 October 2016 6,886 0 View

What effects temper martensite embrittlement have on fatigue of steel ?

what effects temper martensite embrittlement have on fatigue crack nucleation and propagation?

09 October 2016 9,977 26 View

How can calculate fracture load of three-point bending testing through strength and ductility data obtained from tensile testing?

How can calculate fracture load of three-point bending testing through strength and ductility data obtained from tensile testing? and in three-point bending testing ,how to calculate stress...

08 September 2016 6,521 4 View

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08 September 2016 381 53 View

Is it possible the cleavage fracture happens after large amount of elongation in the uniaxial tension test of intact sample?

In some steels,is it possible the cleavage fracture happens after large amount of elongation in the uniaxial tension test of intact sample?

07 August 2016 8,313 9 View

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07 August 2016 3,819 0 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

No streamlines present in a small region inside a flow. This means exactly what?

No streamlines present means whether the flow is getting obstructed there and the velocity inside the region is zero? Or else, the fluid is trapped inside that region with a nonzero velocity?...

22 February 2021 5,249 10 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

Can anyone help with an Accurate Diffuser Expansion Loss formula for rectangular shaped diffusers in turbulent flow regime?

I have tried Idelchik's Handbook of Hydraulic Resistance 4th Edition (2007 page 300) formulas and across some range the formulas are reported valid for, the law of conservation of energy is...

20 February 2021 2,504 1 View