重复固溶处理对GH4738合金异型丝材组织和性能的影响
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- 英文论文题名：Effect of Re-solutioning on Microstructure and Properties of GH4738 Wire
- 论文作者：方波 ; 陈仲强 ; 冯贞伟 ; 刘艳 ; 孙铁峰 ; 宋玺玉 ; 牛静 ; 曹一超 ; 于广娜 ; 崔媛 ; 张玉忱
- 英文论文作者：Fang Bo ; Chen Zhongqiang ; Feng Zhenwei ; Liu Yan ; Sun Tiefeng ; Song Xiyu ; Niu Jing ; Cao Yichao ; Yu Guangna ; Cui Yuan ; Zhang Yuchen ; AVIC Shenyang Liming Aero-engine(Group) Co. ; Ltd. ; The PLA Militrary Representative Office in AVIC Shenyang Liming Aero-engine(Group) Co. ; Ltd.
- 年：2015
- 作者机构：中航工业沈阳航空黎明发动机(集团)有限责任公司;中国人民解放军驻黎明公司军代表室;
- 论文关键词：重复固溶处理 ; GH4738 ; Cr_(23)C_6 ; γ′ ; 拉伸
- 英文论文关键词：resolutioning ; GH4738 ; Cr_(23)C_6 ; γ' ; tensile property
- 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;TG156.94
- 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：2876k
- 原文格式：O
- 会议级别：全国
摘要
本文研究了重复固溶处理对GH4738合金异型丝材组织和性能的影响,结果表明:重复固溶处理温度介于995~1010℃之间时,稍促进GH4738合金晶界Cr_(23)C_6相析出,晶内析出两种不同尺寸的γ′相。重复固溶处理温度介于1040~1080℃之间时,晶界Cr_(23)C_6相析出随温度升高而减少,晶内析出单一尺寸的γ′相,且其析出随温度升高而更加均匀细小。重复固溶处理改变了大、小两种γ′相的尺寸和数量,因此降低合金的室温拉伸强度,但提高拉伸塑性。
The GH4738 wire which was solutioned at 1010℃ for 150 minutes originally was solutioned again at the temperatures in the range of 995℃ to 1080℃,and followed by the stabilizing and aging.Then the influence of re-solutioning was evaluated by analyzing the microstructure and measuring the tensile properties of the wire.It was found that the intergranular Cr_(23)C_6 precipitation was increased when the re-solutioned temperatures were in the range of 995℃ to 1010℃,and the γ'particles with larger and smaller diameters were precipitated in the grain matrix.While the intergranular Cr_(23)C_6 precipitation was decreased and the γ' particles with the same diameter were precipitated in the gain matrix when re-solutioning temperature was in the range of 1040℃ to 1080℃.The re-solutioning changed the size and ratio of the bigger and smaller γ' particles obtained by the standard heat treatment of solutioning,stabilizing and aging.As a result,the tensile strength of the GH4738 wire at room temperature was reduced markedly,while the elongation was improved noticeably.
The GH4738 wire which was solutioned at 1010℃ for 150 minutes originally was solutioned again at the temperatures in the range of 995℃ to 1080℃,and followed by the stabilizing and aging.Then the influence of re-solutioning was evaluated by analyzing the microstructure and measuring the tensile properties of the wire.It was found that the intergranular Cr_(23)C_6 precipitation was increased when the re-solutioned temperatures were in the range of 995℃ to 1010℃,and the γ'particles with larger and smaller diameters were precipitated in the grain matrix.While the intergranular Cr_(23)C_6 precipitation was decreased and the γ' particles with the same diameter were precipitated in the gain matrix when re-solutioning temperature was in the range of 1040℃ to 1080℃.The re-solutioning changed the size and ratio of the bigger and smaller γ' particles obtained by the standard heat treatment of solutioning,stabilizing and aging.As a result,the tensile strength of the GH4738 wire at room temperature was reduced markedly,while the elongation was improved noticeably.
引文
[1]Matsui T.Dynamic recrystallization behavior of Waspaloy durng hot working,Materials Transactions[J].vol.55,2014:255~263.
[2]Andersson J,Sjoberg G P,et al.Effect of different solution heat treatment on the hot ductility of superalloy,part3-waspaloy[J].vol.29,2013:43~53.
[3]中国金属学会高温材料分会.中国高温合金手册[M].北京:中国质检出版社,中国标准出版社,2012:876.
[2]Andersson J,Sjoberg G P,et al.Effect of different solution heat treatment on the hot ductility of superalloy,part3-waspaloy[J].vol.29,2013:43~53.
[3]中国金属学会高温材料分会.中国高温合金手册[M].北京:中国质检出版社,中国标准出版社,2012:876.