A NEW MINIATURE MECHANICAL TESTING PROCEDURE - APPLICATION TO INTERMETALLICS

A new miniature double-shear testing procedure is introduced for the t esting of semibrittle materials such as intermetallics. Detailed exper iments on samples of pure Al and an Al-5 pct Mg solid solution alloy c onfirm that the miniature configuration provides consistent and reliab le results when using either a circular ora square cross section. In a ddition, it is demonstrated that the data obtained using miniature spe cimens are consistent with results from conventional large double-shea r specimens and from specimens tested under tensile conditions. The mi niature testing technique is used to provide preliminary mechanical da ta on a Ni-45 pct Al-5 pct Fe intermetallic.