Why <110> dumbbell in bcc iron has the lowest energy configuration ?

In non magnetic materials, is the lowest energy configuration and not SIA dumbbell. But, in bcc Iron dumbbell is the lowest energy configuration. What makes...

07 August 2018 5,113 3 View

Why MD simulation of mechanical loading (ex. tensile) in metallic systems gives stress values in GPa (high stress value) ?

During MD tensile simulation, the stress values rise upto some GPa (high stress value). I think it is because of the following reasons: 1. System is almost defect free or only with few defects...

07 August 2018 9,414 12 View

How is diffusion coefficient from MSD values obtained from LAMMPS is calculated ?

I'm interested in calculating the diffusion coefficient of self interstitial atom in iron system at 800 K. I got a plot like (attached) this 'MSD vs time' using LAMMPS. The slope (diffusion...

08 September 2017 1,625 24 View

Can any amorphous material be made into single crystal or into a crystalline form?

Amorphous crystal

01 January 1970 641 26 View

Martensitic transformation is considered as diffusionless shear transformation. How is shear involved in this transformation?

Diffusionless implies atoms have not moved. Then how come shear in this transformation of steel?

01 January 1970 801 3 View

What potential should be used for iron for studying dislocation crack grain boundaries interaction using molecular dynamics simulation ?

01 January 1970 3,466 6 View

In martensitic transformation in steel, why should we consider BCT by joining the face centered atoms of FCC even though FCC has higher symmetry?

FCC has 3 fold symmetry but BCT doesn't. So why should we draw a BCT inside a FCC and name it as martensite. A reverse can also be done where we can draw BCT and they get a FCC out of it. If so in...

01 January 1970 9,731 13 View

Why is the Ductile Brittle Transition Temperature of many metals (like silver) are not available ?

Why is the Ductile Brittle Transition Temperature of many metals are not available ? I was trying to find the DBTT data for silver and was shocked to know the lack of these data.

01 January 1970 6,366 1 View

What is the Relation between Grain Boundary and grains crystallography ?

what does it mean - "Fe sigma 3" symmetric tilt grain boundary ? I know about sigma. What is the plane and direction of the two grains and grain boundary ?

01 January 1970 5,962 7 View

Out of several space groups and point groups in crystallography how we end up in 7 crystal structures and 14 bravais lattices?

Which symmetry operator is a must to all crystal structures and bravais lattices?

01 January 1970 4,097 1 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 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

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

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

How UAV or drone can be beneficial to better estimate crop yield?

As we know, crop yield estimation has been done traditionally with farmer's expert knowledge, deductive sampling in representative areas, and remote sensing with satellite imagery. Farmer's Expert...

01 March 2021 3,468 3 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

I need to accelerate corrosion in steel parts that are used in a salt-water environment. Is there a technique for doing so?

I have a structure that employs d-ring swiveling tie-downs that corrode during use and become "frozen". I have sample swivel assemblies that I wish to corrode to see if I can free them using one...

01 March 2021 3,739 3 View

Concrete compressive strength databases?

I am looking for datasets similar to this one: http://archive.ics.uci.edu/ml/datasets/Concrete+Compressive+Strength I am looking for concretes with different types of aggregates (Recycled,...

27 February 2021 6,801 3 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

Can I put a figure that was drawn by Bio-Render in publication paper?

I want to publish paper in journal but I have figures which have drawn with bio-renders, can I put them in the paper or which other software I can use to draw them?

27 February 2021 8,179 1 View