a) At room temperature, what are the tensile strength and ductility of an alloy that has been cooled to equilibrium and contains 10% of metal B, ? b) What percentage of B is required to produce an alloy with a strength of 650 MPa at room temperature? c) What is the ideal B % for achieving adequate strength while also preserving ductility? Alloy composition 90% A 10% B 60% A-40% B 40% A - 60% B 20% A - 80% B 10% A - 90% B Tensile strength, MPa 200 400 500 600 700 Ductility % 35 12 6 4 2