超大型烟气轮机φ1450mm涡轮盘用GH4738合金成分优化设计研究
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- 英文论文题名：Composition Optimization and Design for Nikel Based GH4738 Superalloy Used in Ultra-large φ1450mm Gas Turbine Disc
- 论文作者：姚志浩 ; 董建新 ; 张麦仓 ; 李克雄 ; 张玉峰 ; 谢伟 ; 李蓬川
- 英文论文作者：Yao Zhihao ; Dong Jianxin ; Zhang Maicang ; Li Kexiong ; Zhang Yufeng ; Xie Wei ; Li Pengchuan ; University of Science and Technology Beijing ; CNPC Bohai Petroleum Equipment Manufacturing Co. ; Ltd. ; Baosteel Special Metal Branch ; China National Erzhong Group Co. ; Ltd.
- 年：2015
- 作者机构：北京科技大学材料科学与工程学院;中国石油集团渤海石油装备制造有限公司;宝钢特殊钢分公司;中国第二重型机械集团公司;
- 论文关键词：GH4738高温合金 ; 涡轮盘 ; 合金设计 ; 力学性能 ; 模拟计算
- 英文论文关键词：GH4738 superalloy ; turbine disk ; composition design ; mechanical properties ; simulation
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG132.3;TK473
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：4
- 文件大小：411k
- 原文格式：O
- 会议级别：全国
摘要
本研究利用Thermo-Calc及JMat Pro软件计算,研究了不同C、Al、Ti及Cr等元素的相对GH4738合金中的相析出规律及对其合金力学性能变化规律;基于以上计算,设计超级GH4738高温合金成分与常规合金成分,制备了7种不同合金成分的该合金,并测定了其室温、高温拉伸及高温持久等性能,研究了其合金显微组织状态。最终确定了超级合金的设计思路:适当降低C含量;提高Al含量至合金成分范围高限,适当提高Ti含量;Al+Ti的总量在4.4%~4.6%之间;同时,测定获得拉伸性能趋势结果与计算结果较为吻合。
The effect of C,Al,Ti and Cr on different phase precipitation and their mechanical properties were calculated by Thermo-Calc and JMat Pro software.Based on the above calculation,several optimized and conventional compositions of high-temperature GH4738 alloy were designed and seven kinds of different alloy were prepared by melting,deformation and heat treatment Then,their mechanical properties were tested at room/ high temperature conditions,such as tensile and stress rupture for these alloys.Besides,the microstructure of alloy were anlysed.The results showed that finalized superalloys design should be appropriate to reduce the content of C,to enhance the content of Al up to the limit,appropriately increasing Ti content And Al + Ti should be in a total amount of between 4.4%to 4.6%.At the same time,the calculated results in mechainical properties are consistent with actual results.
The effect of C,Al,Ti and Cr on different phase precipitation and their mechanical properties were calculated by Thermo-Calc and JMat Pro software.Based on the above calculation,several optimized and conventional compositions of high-temperature GH4738 alloy were designed and seven kinds of different alloy were prepared by melting,deformation and heat treatment Then,their mechanical properties were tested at room/ high temperature conditions,such as tensile and stress rupture for these alloys.Besides,the microstructure of alloy were anlysed.The results showed that finalized superalloys design should be appropriate to reduce the content of C,to enhance the content of Al up to the limit,appropriately increasing Ti content And Al + Ti should be in a total amount of between 4.4%to 4.6%.At the same time,the calculated results in mechainical properties are consistent with actual results.
引文
[1]Yao Zhihao,Zhang Maicang,et al.Stress rupture fracture model and microstructure evolution for waspaloy[J].Metallurgical and Materials Transactions A,44(7)2013:3084~3098.
[2]Yao Zhihao,Li Linhan,et al.Research on large-scale turbine disk of wrought GH4738 superalloy using microstructure evolution precision control models combined with integrated simulation methods[C].TMS(The Minerals,Metals&Materials Society),8th International Symposium on Superalloy 718 and Derivatives 2014,2014,8:93~108.
[3]姚志浩,董建新,等.固溶及稳定化工艺对GH4738合金碳化物和γ'相析出规律的影响[J].材料热处理学报,2013,34(10):43~49.
[4]姚志浩,董建新,等.GH738高温合金热变形过程显微组织控制与预测Ⅰ.组织演化模型的构建[J].金属学报,2011,12:1581~1590.
[5]姚志浩,王秋雨,等.GH738高温合金热变形过程显微组织控制与预测Ⅱ.组织演化模型验证与应用[J].金属学报,201l,12:1591~1599.
[6]姚志浩,董建新,等.GH738高温合金热加工行为[J].稀有金属材料与工程,2013,6:1199~1204.
[7]姚志浩,董建新,等.GH738高温合金长期时效过程中γ'相演变规律[J].材料热处理学报,2013,1:31~37.
[8]陈仲强,邰清安,等.GH4738合金碳化物析出和回溶规律研究[J].钢铁研究学报,2013,08:37-45.
[9]姚志浩,董建新,等.固溶及稳定化工艺对GH4738合金碳化物和γ'相析出规律的影响[J].材料热处理学报,2013,10:43~49.
[2]Yao Zhihao,Li Linhan,et al.Research on large-scale turbine disk of wrought GH4738 superalloy using microstructure evolution precision control models combined with integrated simulation methods[C].TMS(The Minerals,Metals&Materials Society),8th International Symposium on Superalloy 718 and Derivatives 2014,2014,8:93~108.
[3]姚志浩,董建新,等.固溶及稳定化工艺对GH4738合金碳化物和γ'相析出规律的影响[J].材料热处理学报,2013,34(10):43~49.
[4]姚志浩,董建新,等.GH738高温合金热变形过程显微组织控制与预测Ⅰ.组织演化模型的构建[J].金属学报,2011,12:1581~1590.
[5]姚志浩,王秋雨,等.GH738高温合金热变形过程显微组织控制与预测Ⅱ.组织演化模型验证与应用[J].金属学报,201l,12:1591~1599.
[6]姚志浩,董建新,等.GH738高温合金热加工行为[J].稀有金属材料与工程,2013,6:1199~1204.
[7]姚志浩,董建新,等.GH738高温合金长期时效过程中γ'相演变规律[J].材料热处理学报,2013,1:31~37.
[8]陈仲强,邰清安,等.GH4738合金碳化物析出和回溶规律研究[J].钢铁研究学报,2013,08:37-45.
[9]姚志浩,董建新,等.固溶及稳定化工艺对GH4738合金碳化物和γ'相析出规律的影响[J].材料热处理学报,2013,10:43~49.