| 镍基耐蚀合金Hastelloy C-276锻造开裂原因分析 |
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| 引用本文： | 嵇爽,李会林,赵秀娟,张雲飞,赵英利,陈文,石玉龙,邢成亮.镍基耐蚀合金Hastelloy C-276锻造开裂原因分析[J].金属热处理,2021,46(6):240-244. |
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| 作者姓名： | 嵇爽 李会林 赵秀娟 张雲飞 赵英利 陈文 石玉龙 邢成亮 |
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| 作者单位： | 1.河钢集团钢研总院, 河北 石家庄 052165;2.河北工业职业技术大学, 河北 石家庄 050091 |
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| 摘 要： | 耐蚀合金Hastelloy C-276锻造过程中出现开裂,对其开裂原因进行了分析,并研究了均质化处理对其组织的影响以提高锻造成材率。结果表明,Hastelloy C-276合金铸态组织中存在大量μ析出相,是导致锻造开裂的主要原因。通过提高均质化加热温度和延长保温时间,可减轻枝晶偏析,经1170 ℃保温10 h空冷后,偏析几乎全部消失,锻造良好。
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| 关 键 词： | HastelloyC-276合金 析出相 均质化处理 枝晶偏析 |
| 收稿时间： | 2021-01-10 |
Forging cracking cause analysis of Ni-based corrosion-resistant alloy Hastelloy C-276 |
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| Ji Shuang,Li Huilin,Zhao Xiujuan,Zhang Yunfei,Zhao Yingli,Chen Wen,Shi Yulong,Xing Chengliang.Forging cracking cause analysis of Ni-based corrosion-resistant alloy Hastelloy C-276[J].Heat Treatment of Metals,2021,46(6):240-244. |
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| Authors: | Ji Shuang Li Huilin Zhao Xiujuan Zhang Yunfei Zhao Yingli Chen Wen Shi Yulong Xing Chengliang |
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| Affiliation: | 1. Hesteel Group Technology Research Institute, Shijiazhuang Hebei 052165, China;2. Hebei University of Industy and Technology, Shijiazhuang Hebei 050091, China |
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| Abstract: | Cracking cause of corrosion resistant alloy Hastelloy C-276 during forging process was analyzed, and the effect of homogenization treatment on its microstructure was studied to improve the forging yield. The results show that there are a lot of μ precipitates in the as-cast microstructure of Hastelloy C-276 alloy, which is the main cause for the forging cracking. By increasing the homogenization heating temperature and prolonging the holding time, the dendrite segregation can be reduced. After heating at 1170 ℃ for 10 h followed with air cooling, the segregation disappears and the forging effect is good. |
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| Keywords: | Hastelloy C-276 precipitated phase homogenizing dendrite segregation |
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