Blog

Grace was born in Korea but was adopted by White parents in the US when she was six. She doesn’t remember much from when she lived in Korea, but has recently started exploring what it means to her to be Korean and American. She plans to take a gap year before college to live in Korea. Grace is exploring her ______. 

A copper-nickel alloy of composition 60 wt% Ni-40 wt% Cu is slowly heated from 1200°C (2192°F), what will be the composition of the last solid phase remaining just before the alloy completely melts?

A 90 wt% Pb–10 wt% Sn alloy is heated to 250°C (480°F); at this temperature it is entirely an

What is the weight fraction of the liquid phase for a 55 wt% Ag – 45 wt% Cu alloy at 900°C?

For a Cu-Ni alloy with a composition of 63.8 wt% Ni and 36.2 wt% Cu at 1250°C, what is the composition of

For a lead (Pb) – tin (Sn) alloy with a composition of 25 wt% Sn and 75 wt% Pb, select the phase(s) present and their composition(s) at 200°C from the following choices.

The eutectic composition for the tin-lead system is approximately:

What does the lever rule calculate in a phase diagram?

Using the lead (Pb) – tin (Sn) phase diagram determine which of the following phase(s)/phase combination(s) will present for an alloy of composition 23 wt%Sn – 77 wt%Pb at 250oC?

What is the liquidus temperature for the alloy with 10 wt% Sn and 90 wt% Pb?