Abstract
Measurements of Young’s modulus at −150∼400°C and of thermal expansion, rigidity modulus and hardness at room temperature were made for Mn–Cu–V alloys subjected to various heat treatments and cold working. The results showed that anomalous changes associated with antiferromagnetic\
ightleftarrowsparamagnetic transformations occur in the Young’s modulus vs temperature curves of the ternary alloys in the annealed state. The temperature coefficient of Young’s modulus, e, varies markedly by annealing, cold working and water quenching, and also shows a large dependence on composition. In the e vs composition curve of the alloys a large positive maximum of e appears, indicating the presence of the Elinvar characteristics.
