Why is fcc more ductile than bcc - Physics Forums
Nov 14, 2011 · Within cubic structures, the face-centered cubic (fcc) has a higher ductility than the body-centered cubic (bcc) due to its closely packed planes in multiple directions. Additionally, the presence of alloying elements, such as carbon, phosphorus, and sulfur, can greatly affect the ductility of a material. Pure metals, such as aluminum and iron ...
Why is the volume of FCC and BCC different in reciprocal space?
Jun 2, 2015 · In summary, the BCC structure has a simple cubic lattice with one basis in the center, resulting in a total of 2 atoms per unit cell and a primitive unit cell volume of 1/2*a^3. In reciprocal space, the BCC structure becomes an FCC structure with a simple cubic lattice of length 2pi/a and a total of 4 atoms. The total volume in reciprocal space ...
Preferred Crystal Structure of Steel (BCC vs FCC) - Physics Forums
Mar 21, 2016 · At high temperatures, the preferred crystal structure is face-centered cubic (FCC) due to the presence of austenite phase, while at lower temperatures, the preferred structure is body-centered cubic (BCC) due to the presence of ferrite. This is explained by the iron-carbon equilibrium diagram and the changes in properties caused by the ...
Determine if BCC or FCC structure - Physics Forums
Aug 28, 2009 · The main difference between BCC (body-centered cubic) and FCC (face-centered cubic) crystal structures is the arrangement of their atoms. In BCC structures, each atom is surrounded by eight other atoms, forming a cube. In FCC structures, each atom is surrounded by twelve other atoms, forming a more compact and symmetrical arrangement.
Are FCC or BCC Crystal Structures Stronger? - Physics Forums
Mar 4, 2009 · FCC metals tend to have more slip systems compared to BCC metals, resulting in easier deformation and higher ductility. The atomic packing factor (APF) is an important factor in determining the number of slip systems in a crystal structure. BCC metals are generally stronger than FCC metals, while HCP metals are the most brittle.
How Does Compression Transform FCC Lattice to BCC and Affect …
Apr 19, 2015 · In summary, the conversation discussed the process of compressing a face-centered cubic (FCC) lattice to a body-centered cubic (BCC) lattice. The rules for X-ray reflection in both FCC and BCC structures were also mentioned, with the key difference being that in FCC, the indices must be all even or all odd, while in BCC, the sum of the indices ...
Miller Indices for FCC and BCC and XRay Diffraction Peaks
Jan 28, 2010 · Miller Indices for FCC and BCC structures are determined by taking the reciprocals of the intercepts of a crystal plane on the three axes of the unit cell. For example, in an FCC structure, a plane that intersects the x, y, and z axes at 1/2, 1/3, and 1/4 respectively, would have Miller Indices of (2,3,4).
Creep mechanism (thermal and irradiation induced/enhanced) and ...
Aug 28, 2024 · BCC, with lower packing efficiency, shows more induced/enhanced creep due to higher defect mobility. Helium embrittlement is more evident in FCC, likely due to nickel content, while irradiation embrittlement is more pronounced in BCC due to fewer slip planes, which hinder dislocation movement. When comparing FCC (Face-Centered Cubic) and BCC ...
The number of lattice point in FCC? - Physics Forums
Mar 5, 2012 · Fcc Lattice Point. In summary, the number of lattice points in FCC (face-centered cubic) structure is 4, while BCC (body-centered cubic) has 2 lattice points. This is due to the fact that atoms at different locations within the unit cell are shared between multiple unit cells, resulting in a fractional count for each atom. Mar 4, 2012.
BCC Metals: An Anomaly in Atomic Packing Factor? - Physics Forums
Oct 17, 2012 · BCC metals have a unique arrangement of atoms that differs from other types of crystal structures, such as face-centered cubic (FCC) or hexagonal close-packed (HCP). In a BCC structure, the atoms are arranged in a cube with one atom at each corner and one in the center of the cube, whereas in an FCC structure, there are atoms at each corner and ...