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survey of manufacturing a usable product is manufactured in the following sequenceore from earth rarr reducing processes rarr molten metal rarr
economic definition manufacturing increase the value of producttechnological definition manufacturing is a process which gives required
q explain the grain growthans grain growth after recrystallization is complete the strain free grains will continue to grow if the metal specimen is
q what is slip what is slip plane what are principal if slip planes and slip direction for bcc fcc and hcp crystalans x-ray diffraction studies show
q explain various stages of creepans creep creep can be defined as the process by which plastic flow occurs when a constant stress or load is applied
q discuss the role of precipitate particles strengthening crystalline materials against yield as low as well as high temperature of deformationans
q describe the four main methods of strengthen crystalline materials against plastic yieldans 1 work hardening strain hardening or work hardening is
q explain the mechanism for dislocation in plastic deformationans stresses are acting on dislocation in a crystal that is known as stress field
q explain the following with reference to deformation of
q what is recovery and recrystallizationans due to the cold working of metals there arise a large number of dislocations and distortion of planes
q state difference between elastic and plastic deformationans elastic deformation elastic deformation is that the part of the deformed material when
q explain the compositional defectsans compositional defect this defect due toa alloying an element to original crystalb
q define the polymorphismans polymorphism it is defined as the change in atomic structure which occurs at a definite transformation temperature
q describe the structure of grain boundaryans one phase of metal contains many grains of various orientation the individual crystals are called
q there is no end centered tetragonal lattice in the bravis list but there is an end centered orthorhombic lattice explain why this is soans a
q define co-ordination numberansco-ordination number the number of atoms which are directly surrounding a given atom is known as coordination
q define the crystal symmetry with reference to crystal structureanscrystal symmetry a crystal is an orderly array of atoms in space atoms
q what is a unit cellans unit cell and lattice constant the smallest components of space lattice are known as unit cell or in other words when the
q what is crystal imperfection briefly discuss all types of point defects in crystalsansthe various type of crystal imperfection are as
q what do you understand by crystallographic notation of atomic planesexplain with the help of examplesanscrystallographic notation1 crystal
q explain crystal lattice of bcc fcc and hcpans a bcc body centered cubic body centered cubic structure the unit cell we observe in addition to the
bravis lattice or bravis crystal systemthe ideas of space lattice was introduced by bravis in 1990according to this there are 14 possible types of
q differentiate crystalline and amorphous materials acrystalline solids those solids in which the ions atoms or molecules in a definite regular
q. what are refractorys? how are they classified? give the essential requirements of good
types of engine the internal combustion engines for the automotive use may be classified according to the following considerationsengine cyclenumber