In continuous unidirectional solidification process, an unidirectional heat transfer condition can be established to control grain growth direction along the solidification direction(SD). By this method, continuous columnar- grained(CCG) polycrystalline alloys without transverse grain boundary can be obtained, which possess high orientated texture and straight grain boundary morphology. High orientated texture can significantly improve the consistency among the grains, and the straight grain boundaries redu...
Manuscript received 2014-07-04,in revised form 2014-09-23nents,resulting in high plasticity and excellent extension behavior along the SD in the CCG alloys.For example,the CCG polycrystalline Cu Ni10Fe1Mn alloy has a high tensile elongation(>40%).However,
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