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中文摘要：
FGH95粉末高温合金一种典型的难加工材料,在切削加工时,已加工表面会形成一层耐腐蚀的,在光学显微镜下呈现亮白色的白层组织。对基体和白层组织进行EDS和XRD分析发现,FGH95合金已加工表面白层具有致密化和无明显结构特征的特点,白层出现了晶粒细化并且发生了物相的变化;采用正交铣削试验的方法,测量加工过程中的切削力和切削温度,对已加工表面进行腐蚀并观察和测量白层的厚度,研究了表面等效应力、应变率和切削温度对白层形成的影响。研究发现,随着切削速度的提高,表面等效应力、应变率和温度不断增加,从而导致白层的厚度不断增大。
英文摘要：
FGH95粉末高温合金一种典型的难加工材料,在切削加工时,已加工表面会形成一层耐腐蚀的,在光学显微镜下呈现亮白色的白层组织。对基体和白层组织进行EDS和XRD分析发现,FGH95合金已加工表面白层具有致密化和无明显结构特征的特点,白层出现了晶粒细化并且发生了物相的变化;采用正交铣削试验的方法,测量加工过程中的切削力和切削温度,对已加工表面进行腐蚀并观察和测量白层的厚度,研究了表面等效应力、应变率和切削温度对白层形成的影响。研究发现,随着切削速度的提高,表面等效应力、应变率和温度不断增加,从而导致白层的厚度不断增大。
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