首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials Pt.4; Jul 7-11, 2003; Leganes, Madrid, Spain >Microstructural Modification and Resultant Properties of Friction Stir Processed Cast NiAl Bronze
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Microstructural Modification and Resultant Properties of Friction Stir Processed Cast NiAl Bronze

机译:搅拌摩擦铸造NiAl青铜的显微组织改性和合成性能

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Friction stir processing (FSP) is being developed as a metal working tool to heal casting defects and modify microstructures in a cast NiAl bronze (NAB) alloy for the purpose of substantially increasing mechanical properties. The initial microstructural evolution and resultant mechanical properties for the variety of microstructures created by FSP are reported herein. The dominant microstructural morphologies created by FSP include Widmanstatten, equiaxed fine grain, and a banded or lamellar structure. These microstructures exist concurrently within the FSP zone at different locations and with different volume ratios. The mechanical properties of these different microstructures are established using a micro-tensile test procedure. In addition, bulk mechanical properties are presented to illustrate mechanical properties of the composite microstructure and the Widmanstatten microstructure as a single morphology.
机译:摩擦搅拌处理(FSP)作为一种金属加工工具正得到开发,以修复铸造缺陷并改变NiAl青铜(NAB)铸造合金的微观结构,以期显着提高机械性能。本文报道了由FSP产生的各种微观结构的初始微观结构演变和所得的机械性能。 FSP产生的主要微观结构形态包括Widmanstatten,等轴细晶粒和带状或层状结构。这些微结构同时存在于FSP区域内的不同位置,并且具有不同的体积比。这些不同的微结构的机械性能是使用微拉伸试验程序确定的。此外,提出了整体机械性能以作为单个形态说明复合微结构和Widmanstatten微结构的机械性能。

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