CuAlBe wires with columnar grain structure were prepared by the heated mold continuous casting to compare with single crystal wires.Experimental results show that columnar grain wires exhibit excellent superelasticity and strain recovery property similar to single crystal wires

and its bending fatigue life lies between polished and unpolished states of single crystal.The absence of transformation was observed when heating to 500 ℃

whereas heating to 700 ℃

α phase is precipitated

which can slightly decrease the strain recovery after soldering

so the wires are able to undergo no less than 30% plastic deformation.