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Trans. Nonferrous Met. Soc. China 27(2017) 608-615 Sequential multi-objective optimization of thin-walled aluminum alloy tube bending under various uncertainties Heng LI1, Jie XU1, Heng YANG1, He...) method, a sequential multi- objective optimization of larger diameter thin-walled (LDTW) Al-alloy tube bending under uncertainties was proposed and implemented based on the deterministic design......
出现少量孪晶. 图3 TP2铜管轧制态金相组织 Fig. 3 Metallographic of copper tube after rolling 2.2 拉拔变形铜管组织结构的演变 图4所示为不同拉拔道次后铜管金相组织.由图4可见,沿拉拔方向晶粒形貌尺寸发生显著变化,随着变形量的增加,晶界趋于平行拉拔方向并形成纤维流线且晶界宽度增加,晶粒破损严重；周向晶粒...并发生转动,择优取向明显,织构逐渐加强；由图6(b)可见,{101}晶面逐渐趋向于平行观察面,成为主要取向. 图4 不同拉拔道次铜管金相组织 Fig. 4 Metallographs of copper tube after drawing passes 图5 不同状态铜管样品取向成像图 Fig. 5 IPF images of copper......
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键词:白铜合金；管坯；连铸；旋转电磁场 中图分类号:TG 249.7 文献标识码:A Thin-walled tube billets of cupronickel alloy by electromagnetic continuous casting LI Xin-tao1, 2, GUO Zhao-xiang1, ZHAO...: A new method was proposed by imposing a rotating electromagnetic field during horizontal continuous casting of thin-walled cupronickel tube billets. The effects of electromagnetic field on the surface......
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; 文献标志码:A 文章编号:1672-7207(2014)06-1983-09 Calculation method of immersed tube tunnel considering mechanical characteristics... Engineering of Ministry of Education (Tongji University), Shanghai 200092, China) Abstract: Based on structural characteristics of immersed tube tunnel joints, a mechanical model of joint was established......
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shaped tube by solid granule medium DU Bing1, ZHAO Chang-cai1, LI Xue-feng2, HE Xin1, DONG Guo-jiang3 (1. Key Laboratory of Advanced Forging & Stamping Technology and Science, Ministry of Education...) Abstract: To meet the challenge of forming high temperature alloy (GH3044) parts, solid granules medium forming (SGMF) process was adopted for forming a convex ring shaped tube that was used......
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