Microstructure and Mechanical Properties of Inner Layer of Centrifugal Casting Bimetal Composite Pipe

Gu Jianfeng; Du Xueming; Zhang Bo; Li Jiaqi

doi:10.15980/j.tzzz.2018.03.017

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Microstructure and Mechanical Properties of Inner Layer of Centrifugal Casting Bimetal Composite Pipe
Vol. 38, Issue 3, Pages: 291-294(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.03.017

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[1]顾剑峰,杜学铭,张勃,李佳琪.离心铸造双金属复合管内层组织及力学性能[J].特种铸造及有色合金,2018,38(03):291-294.

Gu Jianfeng, Du Xueming, Zhang Bo, et al. Microstructure and Mechanical Properties of Inner Layer of Centrifugal Casting Bimetal Composite Pipe. [J]. Special Casting & Nonferrous Alloys 38(3):291-294(2018)
[1]顾剑峰,杜学铭,张勃,李佳琪.离心铸造双金属复合管内层组织及力学性能[J].特种铸造及有色合金,2018,38(03):291-294. DOI： 10.15980/j.tzzz.2018.03.017.

Gu Jianfeng, Du Xueming, Zhang Bo, et al. Microstructure and Mechanical Properties of Inner Layer of Centrifugal Casting Bimetal Composite Pipe. [J]. Special Casting & Nonferrous Alloys 38(3):291-294(2018) DOI： 10.15980/j.tzzz.2018.03.017.

摘要

介绍了离心铸造304不锈钢-高铬铸铁双金属复合耐磨管的制备工艺

对双金属复合管内层耐磨层的成分、组织和力学性能进行了测试分析

采用EPMA对不同厚度耐磨层的成分进行了测试

分析讨论了内层耐磨层不同元素的偏析特征。分析可知

离心力和粘度阻力共同导致了元素偏析

进而引起了金相组织变化和力学性能的梯度分布。

Abstract

The preparation technology of 304 stainless steel-high chromium cast iron bimetal composite wear-resistant pipe by centrifugal casting was described.The composition

microstructure and mechanical properties of the inner layer of bimetal composite pipe were analyzed.The components of different thickness wear-resistant layers were tested by EPMA

and the segregation characteristics of different elements in the inner layer were investigated.By analyzing the formulas of centrifugal force and viscosity resistance

the interaction of centrifugal force and viscosity resistance leads to the segregation of elements

which are responsible for the change of microstructure and the gradient distribution of mechanical properties.

关键词

离心铸造双金属复合耐磨管高铬铸铁元素偏析力学性能

Keywords

Centrifugal CastingBimetal Composite Wear-resistant PipeHCCIElement SegregationMechanical Properties

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