Effects of solid solution time on microstructure and mechanical properties of ZL210 Aalloy were investigated by tensile test

optical microscope

X-ray diffraction

scanning electron microscopy and spectrum analysis.The results show that with the increase of solid solution time

the coarse second phase of ZL210 Aalloy is dissolved constantly into the matrix

and grain size is constantly increased

so the mechanical properties of ZL210 Aalloy is increased firstly and then decreased.With solid solution for11 h

the tensile strength

yield strength

hardness and elongation reach 321 MPa

142MPa

85 HV and14%

respectively.