中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2015年
1期
88-94
,共7页
GH3535合金%热变形%动态再结晶%碳化物%加工图
GH3535閤金%熱變形%動態再結晶%碳化物%加工圖
GH3535합금%열변형%동태재결정%탄화물%가공도
GH3535 alloy%hot deformation%dynamic recrystallization%carbide%processing map
通过热压缩实验研究GH3535合金在温度区间1000~1200°C和应变速率区间0.01~50 s?1的热变形行为。在实验数据基础上得到合金应力曲线和热加工图，且其激活能为356.3 kJ/mol。热加工图分为2个区域，稳定区域发生在所有温度区间和应变速率区间0.01~1 s?1，失稳区域发生在应变速率区间1~50 s?1。显微组织观察表明，完全动态再结晶发生条件为(1150°C,0.01 s?1),(1200°C,0.01 s?1)和(1200°C,0.1 s?1)，不同条件下得到的晶粒尺寸不同且有未溶解碳化物。流变失稳区域有局部流变和裂纹出现。
通過熱壓縮實驗研究GH3535閤金在溫度區間1000~1200°C和應變速率區間0.01~50 s?1的熱變形行為。在實驗數據基礎上得到閤金應力麯線和熱加工圖，且其激活能為356.3 kJ/mol。熱加工圖分為2箇區域，穩定區域髮生在所有溫度區間和應變速率區間0.01~1 s?1，失穩區域髮生在應變速率區間1~50 s?1。顯微組織觀察錶明，完全動態再結晶髮生條件為(1150°C,0.01 s?1),(1200°C,0.01 s?1)和(1200°C,0.1 s?1)，不同條件下得到的晶粒呎吋不同且有未溶解碳化物。流變失穩區域有跼部流變和裂紋齣現。
통과열압축실험연구GH3535합금재온도구간1000~1200°C화응변속솔구간0.01~50 s?1적열변형행위。재실험수거기출상득도합금응력곡선화열가공도，차기격활능위356.3 kJ/mol。열가공도분위2개구역，은정구역발생재소유온도구간화응변속솔구간0.01~1 s?1，실은구역발생재응변속솔구간1~50 s?1。현미조직관찰표명，완전동태재결정발생조건위(1150°C,0.01 s?1),(1200°C,0.01 s?1)화(1200°C,0.1 s?1)，불동조건하득도적정립척촌불동차유미용해탄화물。류변실은구역유국부류변화렬문출현。
The hot deformation behavior of GH3535 superalloy was investigated by hot compression tests in the temperature range of 1000?1200 °C and strain rate range of 0.01?50 s?1. The activation energy is about 356.3 kJ/mol, and the flow curves and processing map were developed on the basis of experimental data. The processing map exhibits a stable domain which occurs in the strain rate range of 0.01?1 s?1 at all the temperatures and a instable domain which occurs in the strain rate range of 1?50 s?1. Microstructural observations reveal that the full dynamic recrystallization (DRX) occurs in the conditions of (1150 °C, 0.01 s?1), (1200 °C, 0.01 s?1) and (1200 °C, 0.1 s?1) with different grain sizes and undissolved carbides. The flow localization and cracks occur in the regime of flow instability.
