Manufacturing Processes Test 3 Study Guide
True
A "Dimension" is numerically define the size and/or geometric characteristics of part or part failure.
Silicon
Besides high carbon content, what other alloying element is characteristic of cast irons?
Cold-work tool steels- dies
D
as fabricated- no special treatment
F
Bauxite
From which of the following ores is aluminum derived?
materials inherent stiffness
In Hooke's Law, the formula utilizes a constant proportionality -E, which is a measurement of the following:
False
In general, for ease of manufacturing, it is desirable for the material to have a high strength property.
0.46
In problem 23, fracture occurs at a gage length of 2.92in. Determine the percent elongation.
50%
In problem 23, if the specimen necked to an area = 0.25in^2. Determine the percent reduction in area.
SURFACE GAGE
Limit Gages include all except:
False
Magnesium is noted for its very high density and low weight composition.
DIAL INDICATOR
Measuring linear dimensions can be accomplished with any of the following except:
original area
The Ultimate tensile strength of a material is the max amount of tensile stress that it can take before failure, and is measured by dividing the applied load by the
True
The carbon percentage range that defines iron carbon alloy as cast iron is 2.1% to about 4 or 5%.
True
The recrystallization temperature is the temperature at which a metal recrystallizes, forming new grain instead of strain hardening.
viscousity
The resistance to flow of a given fluid is its
0.4
The shear modulus of elasticity G, is about BLANK the tensile modulus of elasticity E.
0.7
The shear strength S is about BLANK the tensile TS.
less than
The shear strength of a metal is usually BLANK its tensile strength.
True
The strength and hardness of steel increases as carbon content increases
False
The stress divides the applied force on the test specimen by the original area; Engineering stress divides the applied force by the instantaneous area which is elongated.
True
Titanium is noted for its high strength to weight ratio, corrosion resistance, and high temperature strength.
True
Tolerances define the limited of an allowed variation.
Zinc
Traditional brass is an alloy made of copper mixed with?
decreases
Unlike in a compression test, in a tensile test the specimen's cross sectional area BLANK.
True
Viscousity is the ratio of shear stress and shear rate.
Water-Hardening tool steels (hardening via water quenching)
W
Tin
What element is traditionally paired with copper to form bronze?
ALUMINA CERAMIC
Which one of the following materials has the highest hardness:
True
A bending test is often used to test the strength of brittle materials, and provides the transverse rupture strength measurement.
True
Accuracy is the degree to which a measured value agrees with the true value of the quality of interest.
False
An alloy is a metal comprised of only one element, and is non-metallic.
a)Brinell b)Rockwell c)HARMONIC d)Vickers
Different hardness tests and scales are available for different hardnesses that material possesses. Which one of the following scales is NOT used in a hardness test?
True
GO/NO GO gages are used to determine an object or feature is within the prescribed tolerance limits.
Hot- Working tool steels- dies
H- aisi classification
strain hardening (wrought aluminums)
H- temper designations
64,000 psi; 120000psi
23. A test specimen in a tensile test has a gage length of 2.0in and an area= 0.5 in2. During the test the specimen yields under a load of 32,00lb. The corresponding gage length = 2.60in. This is the .02 percent yield point. The maximum load = 60,000b is reached at a gage length = 2.60in. Determine its yield strength and tensile strength.
1.386
A copper wire of diameter 0.80mm falls at an engineering stress = 248.2 MPa. Its ductility is measured as 75% reduction of area. Determine the true strain at failure.
True
A phase diagram is a graphical picture showing the phases of a metal alloy system as a function of composition and temperature.
True
A solid solution is an alloy in which one of the metallic elements is dissolved in another to form a single phase
False
A substitutional solid solution is where the dissolved atoms are small and fit into the vacant spaces in the lattice structure of the solvent metal.
600MPa
A tensile test for a certain metal provides flow curve parameters: strain-hardening exponent is 0.3 and strength coefficient is 600 MPa. Determine the flow stress at a true strain= 1.0.
False
An interstitial solid solution is where atoms of the dissolved element replace atoms of the solution element in the lattice structure of the metal.
viscousity
At a constant temperature, Newtonian fluids exhibit a constant of proportionality, which is the fluids
Compression
Barreling of a test specimen due to frictional forces is a phenomenon occurring during which test?
True
Hardness is defined as the resistance to indentation of a material.
True
Most hardness tests involve pressing a hard object into the surface of a test specimen and measuring the indentation (or its effect) that results.
Annealed to relieve strain hardening and improve ductility
O
Ferrous
One of the major groups of metals is
10XX
Plain carbon steels are designated in the AISI code system by which of the following:
False
Precision is the degree to which a measured value agrees with the true value of the quality of interest.
True
Refractory means the capability to withstand high operating temperature strength.
Shock-resistant tool steels - tools needing high toughness, for applications such as sheet metal punching
S
False
Superalloys are generally distinguished by their strength and resistance to corrosion and oxidation at lower temperatures.
False
Surface roughness is the average horizontal deviation from a nominal surface over a specific length.
Defining the surface characteristics; the relationship between manufacturing processes and resulting surface characteristics; surface integrity; surface texture.
Surface technology includes
Thermal treatment to produce stable tempers other than F,H, or O
T
High-Speed tool steels -cutting tools
T, M
False
The Brinell hardness test measures the resistance to indentation of a material by pressing a diamond into the test material.
yield strength
The point in a materials stress-strain curve at which plastic deformation begins is known as which of the following?
High electrical conductivity
What is the most important engineering property of copper that determine most of its applications?
Chromium
What is the predominant alloying element in all of the stainless steels?
0.02%to 2.1%
What is the range of carbon % that defines an iron-carbon alloy as a steel?
LOW ELECTRICAL AND THERMAL CONDUCTIVITY
Which are NOT properties for which aluminum is noted?
Aluminum
Which element is most abundant on earth?
TO STRENGTHEN MATERIALS
Which is NOT one of the important applications of Nickel?
CARBON BASED
Which is NOT one of the three groups of Superalloys?
DIAMOND
Which of the following Materials has the highest modulus of elasticity?
Chromium
Which of the following alloying elements are most commonly associated with stainless steel?
LOWER DENSITY THAN CERAMICS OR POLYMERS
Which of the following are NOT general properties that distinguish metals from ceramics and polymers?
Ionic Bonding
Which of the following characteristics are inconstant with metals?
ACCURATE
Which of the following is NOT a tolerance type?
BENDING
Which of the following is NOT one of the types of static stresses to which materials are subjected?
Magnesium
Which of the following metals has the lowest density?
Copper
Which of the following metals is noted for its good electrical conductivity?
ALUMINUM
Which one is NOT a noble metal?
Al
Which one is NOT one of the common alloying elements other than carbon in low alloy steels?
Carbon
Which one of the following elements is the most important alloying ingredient in steel?
Zinc
Which one of the following is not a common alloying ingredient in steel?
