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Match the phase name with the correct image of the corresponding crystal structure of the iron atoms.
Pas die fasenaam by die korrekte beeld van die ooreenstemmende kristalstruktuur van die ysteratome.
A Sn-Pb alloy that contains 89.9 wt% Sn is cooled very slowly to just below the eutectic isotherm at around 183 °C (you can therefore use the solubility limits labelled on the eutectic isotherm). What is the mass fraction of the β phase? Give your answer to 3 significant figures. Remember to select the correct units.
’n Sn-Pb-allooi wat 89.9 wt% Sn bevat, word baie stadig afgekoel tot net onder die eutektiese isoterm teen ongeveer 183 °C (u kan dus die oplosbaarheidslimiete gebruik wat op die eutektiese isoterm gemerk is). Wat is die massafraksie van die β-fase? Gee jou antwoord op 3 beduidende syfers. Onthou om die regte eenhede te kies.
A Sn-Pb alloy that contains 85.2 wt% Sn is cooled very slowly to just below the eutectic isotherm at around 183 °C (you can therefore use the solubility limits labelled on the eutectic isotherm). What is the mass fraction of the eutectic microconstituent? Give your answer to 3 significant figures. Remember to select the correct units.
’n Sn-Pb-allooi wat 85.2 wt% Sn bevat, word baie stadig afgekoel tot net onder die eutektiese isoterm teen ongeveer 183 °C (u kan dus die oplosbaarheidslimiete gebruik wat op die eutektiese isoterm gemerk is). Wat is die massafraksie van die eutektiese mikrokomponent? Gee jou antwoord op 3 beduidende syfers. Onthou om die regte eenhede te kies.
A Sn-Pb alloy that contains 91.5 wt% Sn is cooled very slowly to just below the eutectic isotherm at around 183 °C (you can therefore use the solubility limits labelled on the eutectic isotherm). What is the mass fraction of the α phase? Give your answer to 3 significant figures. Remember to select the correct units.
’n Sn-Pb-allooi wat 91.5 wt% Sn bevat, word baie stadig afgekoel tot net onder die eutektiese isoterm teen ongeveer 183 °C (u kan dus die oplosbaarheidslimiete gebruik wat op die eutektiese isoterm gemerk is). Wat is die massafraksie van die α-fase? Gee jou antwoord op 3 beduidende syfers. Onthou om die regte eenhede te kies.
The aluminium-magnesium (Al-Mg) phase diagram is provided below. Use this diagram to match the statements below with the correct corresponding answers.
Die aluminium-magnesium (Al-Mg) fasediagram word hieronder verskaf. Gebruik hierdie diagram om die stellings hieronder met die korrekte ooreenstemmende antwoorde te pas.
Image source / Beeld bron: Binary Alloy Phase Diagrams, Second Edition ASM International, 1996
Refer to the aluminium-magnesium (Al-Mg) phase diagram below which is adapted to include labels of various invariant points (viz. A, B, C, D, and E). Which of these point(s) are classified as congruent phase transformations? (Hint: Congruent phase transformations are transformations in which there is no change in composition of the phases involved). Select all that apply.
Verwys na die aluminium-magnesium (Al-Mg) fasediagram hieronder wat aangepas is om byskrifte van verskeie onveranderlike punte (nl. A, B, C, D en E) in te sluit. Watter van hierdie punt(e) word as kongruente fasetransformasies geklassifiseer? (Wenk: Kongruente fasetransformasies is transformasies waarin daar geen verandering in samestelling van die betrokke fases is nie). Kies alles wat van toepassing is.
Image source / Beeld bron: Binary Alloy Phase Diagrams, Second Edition ASM International, 1996
Suppose metals are used for the above pole vault application. Use the selection chart below together with your understanding of metal properties to select the most suitable metal(s) based on the criteria mentioned above. Hint: You might want to refer to Ch 11.3 (10th ed) in the textbook. / Gestel metale word gebruik vir die bogenoemde paalspringtoepassing. Gebruik die onderstaande keuringsgrafieke saam met u kennis van metaal eienskappe om die mees geskikte metaal (metale) te kies op grond van die bogenoemde kriteria. Wenk: U sal dalk na Hfst 11.3 (10de uitgawe) van die handboek wil verwys.
Suppose metals are used for the above pole vault application. Use the selection chart below together with your understanding of metal properties to select the most suitable metal(s) based on the criteria mentioned above. Hint: You might want to refer to Ch 11.3 (10th ed) in the textbook. / Gestel metale word gebruik vir die bogenoemde paalspringtoepassing. Gebruik die onderstaande keuringsgrafieke saam met u kennis van metaal eienskappe om die mees geskikte metaal (metale) te kies op grond van die bogenoemde kriteria. Wenk: U sal dalk na Hfst 11.3 (10de uitgawe) van die handboek wil verwys.
Select the most suitable statement which matches the material in the context of these requirements. Use the material selection charts to aid you in your decisions. / Kies die mees geskikte stelling wat ooreenstem met die materiaal in die konteks van hierdie vereistes. Gebruik die materiaalkeusegrafieke om u te help met u besluite.
Match each function with a material type. Use the selection charts and accumulated knowledge of materials that you learnt in this course to assist you in your decision. / Pas elke funksie by 'n materiaal tipe. Gebruik die keuringsgrafieke en opgehoopte kennis van materiaal wat u in hierdie kursus geleer het om u te help met u besluit.
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