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Effects of Microstructure on the Tensile, Fracture Toughness and Fatigue Behaviour of Gamma Titanium Aluminides

Young- Won (Y-W.) Kim(UES , Inc. , Materials Research Division , 4401 Dayton-Xenia Rd. , Dayton , OH 45432 , USA)(Paper presented at the International Workshop on OrderedIntermetallics 1992 , Hangzhou , China)

材料科学技术(英文)

The effects of microstructure on the deformation and fracture behaviour of two-phase TiAl alloys were investjgated under monotonic and cyclical loading conditions, over a range of temperatu res.The tensile behaviour is analyzed for deformation temperatures between RT and 950℃, Fracture resistance behaviour and toughening mechanisms at RT and 800℃ are analyzed. and the inverse relationship botween ductility and toughness is explained using the crack initiation toughness. The preliminary results of load-controlled fatigue behaviour at 800℃ are interpreted using the tensile behaviour because deformation structure and fracture modes are similar under these two loading conditions

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转炉烟气回收系统RD阀伺服执行器的研究

黄浩 , 杨缨 , 李远慧

钢铁研究 doi:10.3969/j.issn.1001-1447.2005.04.005

针对某钢厂转炉烟气净化与回收系统中RD阀门伺服执行器进行研究,建立了伺服执行器的数学模型,并利用计算机测试系统进行了验证.

关键词: 转炉烟气 , 伺服执行器 , 计算机测试

冷轧压下量对IF钢板的纤维织构演变影响的定量研究

蒋奇武 , 何长树 , 刘沿东 , 孙祥林

材料与冶金学报 doi:10.3969/j.issn.1671-6620.2003.02.013

通过对不同冷轧压下量的冷轧和退火IF钢板的纤维织构的定量研究,得出了其织构演变主要在{111}//ND、<110>//RD、{100}//ND、<112>//RD组分之间;退火时<110>//RD组分一部分转化为{111}//ND,一部分转化为<112>//RD.冷轧压下量达到90%,不能得到好的γ纤维织构分布形态.

关键词: 冷轧压下量 , IF钢 , 纤维织构

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