ME 3701 Final Study Guide Exam With Advanced Answers.
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Module
ENGR 3701
Institution
ENGR 3701
X-Ray Diffraction Experiment - correct answer The purpose of this experiment is to introduce students to the use of x-ray diffraction techniques for investigating various types of crystal structure encountered in metallic materials
crystal structure, interato...
ME 3701 Final
X-Ray Diffraction Experiment - correct answer The purpose of this experiment is to
introduce students to the use of x-ray diffraction techniques for investigating various types of crystal
structure encountered in metallic materials
crystal structure, interatomic spacing - correct answer The x-ray diffraction
technique is used to determine ______ and ______ of crystalline samples
x-ray diffraction - correct answer The ________ technique is used to determine the
crystal structure and interatomic spacing of crystalline samples through constructive interference of
reflected x-ray beams
constructive interference of reflected x-ray beams - correct answer The x-ray
diffraction technique is used to determine the crystal structure and interatomic spacing of crystalline
samples through________
material properties - correct answer Many __________are related to the actual
crystal structure and the atomic arrangement on various crystalline planes within these structures
FCC,BCC,HCP - correct answer The three crystal structures found for most of the
common metals
face-centered cubic - correct answer What does FCC stand for?
body-centered cubic - correct answer What does BCC stand for?
hexagonal close-packed - correct answer What does HCP stand for?
substitutional solid solutions - correct answer Engineering metals are commonly
composed of __________
,steels - correct answer ________ have either BCC or FCC crystal structures
FCC - correct answer Aluminum, Titanium, and Copper alloys such as brass,
generally contain substitutional atoms in their ________ structures
x-ray diffraction - correct answer ________ techniques can be utilized to identify
the structure of various materials
{1 1 1} - correct answer In FCC crystal structures the densest packed crystalline
planes belong to the _______ family of planes
slip - correct answer the main phenomenon in plastic deformation
most densely packed planes - correct answer Slip generally occurs on the
_________long the most densely packed directions
12 - correct answer There are altogether ________possible slip directions that can
occur in FCC crystals, and as a result that many slip systems in FCC materials
tightly packed - correct answer Compared with FCC crystals, the closest packed
planes in BCC are not as _________
{1,1,0} - correct answer In BCC, the planes with the highest atomic packing density
are those in the ______family of planes
6 - correct answer There are _________ sets of non-parallel planes in the BCC
family in any one crystal, as can be discerned from the BCC unit cell
, <1,1,1> - correct answer The atoms in the BCC crystals are in contact with one
another are in contact along the _________ family of directions
48 - correct answer There are ______ slip systems in BCC materials
HCP - correct answer This type of crystal usually exhibits twinning and have
secondary slip systems like BCC crystals and also become brittle at low temperatures
FCC - correct answer This type of crystal generally remains ductile and tough even
at sub-zero temperatures
to determine the crystal structure and interatomic spacing of crystalline samples - correct answer
What is the purpose of X-ray Diffraction?
0.05 to 0.25 nm - correct answer Typical x-rays used for diffraction are
electromagnetic waves with wavelengths in the range of ______
constructive interference - correct answer During x-ray diffraction at the Bragg
angle theta, the reflected rays are in phase and reinforce one another, called________
Bragg's Law - correct answer gives the relationship among the angular positions of
the reinforced diffracted beams in terms of the wavelength of the incident x-ray and the interplanar
spacing of the crystal planes
even - correct answer For the BCC structure, diffraction occurs only on planes
whose Miller indices when added together total to a _____number
even,odd - correct answer For the FCC crystal structure, the principal diffracting
planes are those whose Miller indices are either all ____or all ________
to investigate various types of crystal structure - correct answer the object of the x-
ray diffraction experiment
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