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Materials Science A / Materiaalkunde A - 214

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Match the images below with the correct type of impact test name. / 

Pas die prente hieronder met die korrekte tipe impak toets naam. /

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For the experimental data provided and the carbon composition, at what distance from the quenched end do you expect 50% martensite form for the 1040 alloy? Give the answer to 3 significant figures and remember units (Hint: Table 7 in ASTM A255).

Vir die eksperimentele data wat verskaf is en die koolstof samestelling, op watter afstand vanaf die uitgebluste punt verwag u om 50% martensiet te vorm vir die 1040 allooi? Gee die antwoord tot 3 betekenisvolle syfers en onthou eenhede (Wenk: Tabel 7 in ASTM A255). 

 

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Match the micrographs of the surface microstructures with the most probable positions (distance from quenched end) for the alloy 4340 Jominy end-quench test specimen. 

Pas die mikrograwe van die oppervlakmikrostrukture by die mees waarskynlike posisies (afstand vanaf uitgebluspunt) vir die allooi 4340 Jominy eindblustoetsstuk.

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For the experimental data provided and the carbon composition, at what distance from the quenched end do you expect 50% martensite form for the 4340 alloy? Give the answer to 3 significant figures and remember units (Hint: Table 7 in ASTM A255).

Vir die eksperimentele data wat verskaf is en die koolstof samestelling, op watter afstand vanaf die uitgebluste punt verwag u om 50% martensiet te vorm vir die 4340 allooi? Gee die antwoord tot 3 betekenisvolle syfers en onthou eenhede (Wenk: Tabel 7 in ASTM A255). 

 

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Based on your answers for the previous questions, which steel alloy (1040 or 4340) is more hardenable?

Gebaseer op u antwoorde vir die vorige vrae, watter staalallooi (1040 of 4340) is meer verhardbaar?

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What is the length of a standard wrought sample?

Wat is die lengte van 'n standaard gesmee toetstuk?

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For the experimental data provided, what is the J 10/16 hardenability index for the 1040 steel alloy? Remember to include the correct unit. 

Wat is die J 10/16 verhardbaarheidsindeks vir die 1040 staalallooi vir die gegewe eksperimentele data? Onthou om die regte eenheid by te voeg. 

 

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Based solely on carbon composition, what is the expected maximum hardness of the 1040 and 4340 steel alloy Jominy test specimens? (Hint: refer to steel AISI designation conventions in the Project 4 content and also refer to Table 7 in A255). Do not forget units.

Uitsluitlik gebaseer op koolstofsamestelling, wat is die verwagte maksimum hardheid van die 1040 en 4340 staalallooi Jominy toetstukke? (Wenk: verwys na staal AISI-aanwysingskonvensies in die Projek 4-inhoud en verwys ook na Tabel 7 in A255). Moet nie eenhede vergeet nie.

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Match the following normalizing and austenitizing processes performed prior to the Jominy end-quench test for the 1040 and 4340 steel alloys with the correct heat treatment. 

Pas die volgende normaliserings- en austenitiseringsprosesse wat uitgevoer is voor die Jominy-eindblustoets vir die 1040 en 4340 staalallooie met die korrekte hittebehandeling.

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For the experimental data provided, what is the J 10/16 hardenability index for the 4340 steel alloy? Remember to include the correct unit. 

Wat is die J 10/16 verhardbaarheidsindeks vir die 4340 staalallooi vir die gegewe eksperimentele data? Onthou om die regte eenheid by te voeg. 

 

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