应变诱导析出对Al3Ti(+9.7Fe)合金力学行为的影响

Effect of Strain-induced Precipitation of Al3Ti on the Mechanical Behavior of Al3Ti(+9.7Fe) Alloy

    摘要
  • 摘要: 采用应力松弛方法,研究了Ll2型结构Al3Ti(+9.7Fe)合金形变过程中形变诱导析出Al2Ti沉淀相的现象,发现Al2Ti析出是合金室,中温下表现为它是脆性断裂的主要原因。用TEM方法,研究了Al2Ti析出相与Ll2型基体的位向关系,表明Al2Ti的惯析面为100面。

     

    Abstract: The precipitaion of Al2Ti induced by strain was studied by means of stress-relax method during deformation of Ll2 structure Al3Ti(+9.7Fe) alloy.It is shown that the Al2Ti precipitatings is the principal reason for the ductile fracture of Al3Ti base alloy at room or middle temperature.By TEM,it is proved that the Al2Ti precipitation has rigorous crystal orientation relationship with Al3Ti matrix,100p//100m.

     

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