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GH4700镍基高温合金的高温塑性变形性能 被引量:1

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摘要 在Gleeble-3800热模拟试验机上,利用热压缩试验研究了GH4700镍基合金在变形温度1120℃~1170℃、应变速率0.01S~~1s1条件下的热变形特性,建立热变形本构方程,得到其热激活能为397.337kJ/mol;在计算功率耗散效率的基础上,使用动态模型理论,绘制了GH4700合金的热加工图并观察了显微组织,结果表明:随着变形温度升高和应变速率降低,q值明显增加。在变形温度1170℃,应变速率为0.01s-1时,能量消耗效率达到最大值0.45,动态再结晶程度较高,组织较好。
作者 李莎 曾莉
出处 《太钢科技》 2013年第3期21-25,共5页 Taigang Science & Technology
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