| 高温合金筒内旋压锯齿形沟槽微观组织特征 |
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| 引用本文： | 贾震,王毛,韩志仁,范作军,丛家慧.高温合金筒内旋压锯齿形沟槽微观组织特征[J].稀有金属材料与工程,2019,48(5):1401-1405. |
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| 作者姓名： | 贾震 王毛 韩志仁 范作军 丛家慧 |
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| 作者单位： | 沈阳航空航天大学航空制造工艺数字化国防重点学科实验室 |
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| 基金项目： | 辽宁省自然科学基金 (No. 201602558)，辽宁省教育厅科学基金(No. L201748)，航空制造工艺数字化重点学科实验室开放基金(No. SHSYS2017001) |
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| 摘 要： | 采用焊接板预制坯以及内旋压的方法制造了一种带壁锯齿槽的大直径薄高温合金筒。研究了筒内锯齿槽的显微硬度和显微组织特征。坯料的焊接导致了接头处微观组织为粗大且不均匀的树枝状支晶,这致使焊接接头与其外区域之间的显微硬度差异较大。内旋压促使锯齿槽上焊接接头区外的初始晶粒和焊接接头处的树枝状支晶都发生细化。锯齿槽的微观力学性能不均匀性因剧烈的塑性变形而明显得到改善。
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| 关 键 词： | 锯齿形沟槽 内旋压 高温合金筒 微观组织特征 显微硬度 |
| 收稿时间： | 2018/2/14 0:00:00 |
| 修稿时间： | 2019/4/12 0:00:00 |
Microstructure characteristics of the serrated groove formed by inner spinning on the high temperature alloy tube |
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| Z. Ji,M. Wang,Z. R. Han,Z. J. Fan and J. H. Cong.Microstructure characteristics of the serrated groove formed by inner spinning on the high temperature alloy tube[J].Rare Metal Materials and Engineering,2019,48(5):1401-1405. |
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| Authors: | Z Ji M Wang Z R Han Z J Fan and J H Cong |
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| Affiliation: | Key Lab of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Key Lab of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Key Lab of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Key Lab of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Key Lab of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University |
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| Abstract: | A large-diameter thin-walled high temperature alloy tube with serrated groove is produced by inner spinning whose blank is welded up, and the micro-hardness and microstructure characteristics of the serrated groove in the tube are investigated. The welding results in coarse and uneven dendrites in the as-welded joint, which leads to larger the micro-hardness difference between the as-welded joint and the out of -welded joint zone. Both the original grains from the outer of the welded joint zone and the dendrites of the as-welded joint are refined by the inner spinning on the serrated groove. The micro-mechanical property unevenness of the serrated groove is significantly improved by severe plastic deformation. |
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| Keywords: | Serrated groove Inner spinning High temperature alloy tube Microstructure characteristics Micro-hardness |
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