Which process is used for high temperature shaping of many

Which process is used for high - temperature shaping of many materials reduction recrystallization polymerization extrusion All but which of the following processes strengthens metals precipitation processes that produce submicroscopic particles during a low temperature heat treatment increasing the carbon content of low carbon steels annealing above the recrystallization temperature mechanical deformation below the recrystallization temeperature (cold working) All but which of the following statements about the austenite - martensite - bainite transformation if correct Pwarlite is stable/lamellar mixture consisting of BCC ferrite plus carbide (Fe_3C) It forms through eutectoid decomposition during the rapid quenching of austenite (FCC iron) Tempering of matensite is accomplished by reheating martensite to precipitate the fine particles of carbide within a ferrite matrix, thus producing a tough strong structure Baininte and tempered martensite have distinctly different microstructures. Can be strengthened by all but which of the following practices annealing qauenching and tempering age and precipitation hardening work hardening If 1080 steel (0.8 wt% carbon) is annealed by very slow cooling from 800 degree C to ambier temperature, its microstructure will consist almost entirely of: bainite austenite martensite pearlite Alloying elements produce all but which the following effects in steels They alter the number of atoms in a unit cell of austenite They increase the depth of hardening in quenched steels They increase the hardness of ferrite in pearlite They retard the decomposition of austenite

Solution

5-b

6-b,c,d

7-a,b,d

8-a,b

9-d