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A slip plane in a crystal is a specific crystallographic plane along which plastic deformation occurs when shear stress is applied. It is a preferred plane for dislocations to move and cause the crystal to deform without breaking. Movement along slip planes allows crystals to change shape without fracturing.

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How many slip system are there in hcp crystal?

In a hexagonal close-packed (hcp) crystal structure, there are typically 12 slip systems. These consist of three primary slip directions (the close-packed directions) and four distinct slip planes. The primary slip directions are along the close-packed directions of the hexagonal lattice, specifically along the directions, while the slip planes are the (0001) basal plane and the three prismatic planes. This combination allows for significant plastic deformation under applied stress.


Why FCC crystal structure has more slip plans thenHCP?

FCC crystal structure has 12 slip planes because of its cubic symmetry, which allows slip to occur in many directions. HCP crystal structure, on the other hand, has 3 slip planes due to its hexagonal close-packed arrangement, which restricts the slip to fewer directions.


What are miller indices?

Miller indices are a symbolic notation used to describe the orientation of planes and directions in a crystal lattice. They are a set of integers (hkl) representing the intercepts of a plane or direction with the crystallographic axes. Miller indices are used in crystallography to uniquely identify specific crystallographic planes and directions.


Pyromophite is an example of what crystal system?

Pyromorphite belongs to the hexagonal crystal system. This system is characterized by three axes of equal length that intersect at 120-degree angles, with one axis perpendicular to the plane formed by the other two axes.


What are the 3 types of fault?

Reverse faultNormal faultStrike-slip fault

Related Questions

What is difference beween slip and twinning?

1-Slip occurs in distinct atomic spacing multiples, whereas the atomic displacement for twinning is less than the inter-atomic separation, usually proportional to their distancesfrom the twin plane. 2-for slip, the crystallographic orientation above and below the slip plane is the same both before and after the deformation; for twinning, there will be a reorientation across the twin plane.


What is difference between sessile dislocation and glissile dislocation?

a sessile dislocation has a burger's vector that does notlie in the primary slip plane of the crystal, so it is immobile.a glissile dislocation has a burger's vector that doeslie in the primary slip plane of the crystal and thus is able to move in that plane.


Why FCC crystal structure has more slip plans thenHCP?

FCC crystal structure has 12 slip planes because of its cubic symmetry, which allows slip to occur in many directions. HCP crystal structure, on the other hand, has 3 slip planes due to its hexagonal close-packed arrangement, which restricts the slip to fewer directions.


What is difference between cross slip vs slip?

Dislocations move because the resolved shear stress (Schmidfactor) is sufficient high enough to activate the glide system in which the slip plane lies. (slip) Screw-dislocations in fact are able to move from one slip plane to another parallel plane (burgers vector does not change!). In a fcc lattice a $dislocation may change the (111) plane to (1 -1 1) plane due to local stresses. (cross slip) Edge dislocations can change their planes too. It is a thermally activated process which is called climb (vacancy flux).


What is the substance with 3-dimensional plane faces?

Crystal


How do the processes of basal slip and internal plastic flow differ?

Basal slip involves the movement of crystal planes over each other in a preferred direction, usually parallel to the basal plane, allowing for plastic deformation in materials like metals. Internal plastic flow refers to the movement of dislocations within the material, leading to permanent deformation without fracture. While basal slip is more common in crystalline materials with well-defined crystal structures, internal plastic flow can occur in various materials with defects and dislocations.


Describe Burger vector in fcc material?

Slip in FCC (face centered cubic) crystals occurs along the close packed plane. Specifically, the slip plane is of type {111}, and the direction is of type . In the diagram, the specific plane and direction are (111) and [-110], respectively. Given the permutations of the slip plane types and direction types, FCC crystals have 12 slip systems. In the FCC lattice, the Burgers vector, b, can be calculated using the following equation:[1] : [1] Where a is the lattice constant of the unit cell. Unit Cell of an FCC material.


In structural geology what's the difference between true slip and net slip in the context of faults?

True Slip and Net Slip are the same thing. We typically use the term "Net Slip" for the slip vector on a fault that describes the magnitude (length) and orientation (trend and plunge) of a line between two formerly adjacent points.


What is the main difference between a dip slip fault and a strike slip fault?

The main difference between a dip-slip fault and a strike-slip fault is the direction of movement. In a dip-slip fault, the movement is primarily vertical along the dip direction of the fault plane, either up or down. In a strike-slip fault, the movement is primarily horizontal along the strike direction of the fault plane, either to the left or right.


What are the slip systems that govern the plastic deformation of crystals under stress?

The slip systems that control the plastic deformation of crystals under stress are specific crystallographic planes and directions along which atoms can move past each other. These slip systems allow for the rearrangement of atoms within the crystal lattice, enabling the crystal to deform plastically without breaking.


What is the difference of a dip slip fault or a strike slip fault?

In a dip-slip fault, the movement is primarily vertical along the fault plane, either up (reverse fault) or down (normal fault). In a strike-slip fault, the movement is primarily horizontal along the fault plane, with minimal vertical movement. Both types of faults are caused by tectonic stresses in the Earth's crust.


What is the schmid factor?

The Schmid factor m is part of the equation for the critical resolved shear stress τ0. The critical resolved shear stress is the component of shear stress in a slip plane, resolved in the direction of slip, necessary to initiate slip in a grain (plastic deformation in metals). m = cos(κ)cos(λ) ; τ0 = mσ κ - the angle between the applied load direction and the slip plane normal. λ - the angle between the applied load direction and the slip direction. σ - the applied stress or load