【摘要】 使用XRD和Mossbauer等方法,研究了在Ar气氛下机械合金化Fe-Ni粉末相结构的变化 结果表明,在机械合金化Fe₆₄Ni₃₆粉末过程中,fcc相的数量随着球磨时间的增加先增加然后减少,与加乙醇球磨Fe₆₄Ni₃₆的情形相同。当Ni的含量（原子分数）大于50％时,有fcc相、顺磁相和FeNi₃形成,当Ni的含量低于50％时,bcc相的数量随着Ni含量减少而增加。Mossbauer谱的结果表明,因球磨时间或Fe、Ni比例的不同,Fe-Ni球磨粉末固溶体具有不同结构的原子配比。更多还原

【Abstract】 In the process of mechanically alloyed Fe64Ni36 alloy, the quantity of the fcc phase first increased with the ball-milling time increasing then decreased. This phenomenon is the same as ball-milling of Fe64Ni36 powder with alcohol. When the Ni concentration (atomic fraction) is more than 50%, the fcc phase, paramagnetic phase and FeNi3 were formed. When the Ni concentration is below 50%, the quantity of the bcc phase increased with Ni concentration decreasing. The Mossbauer spectroscopes show that the different surroundings of iron in fcc solid solution 7(Fe-Ni) are formed at different ball-milling time or different Fe-Ni composition.更多还原