Effect of Rare Earth Magnesium Modification on Wear Resistance of Permanent-mould High Chromium Cast Iron Cr26 AITranslate
Abstract AITranslate
The effect of rare earth magnesium modification concentration on the structure,hardness and wear resistance of Cr26 high chromium cast iron was studied by metallographic microscope,scanning electron microscopy,Rockwell hardness tester and dynamic abrasive wear tester,and the wear mechanism was discussed through the relationship between wear amount and wear trace morphology.The results show that the addition of rare earth magnesium changes the formation and growth environment of carbides,the morphology of carbides changes from long sheet and strip distribution to lump and nearly spherical distribution,and reduces the degree of matrix splitting.When the addition amount of rare earth magnesium reaches 0.6%,the microstructure and the distribution of carbides reaches its optimal state.The main role of rare earth is to purify the alloy liquid,refine the as-cast structure of the alloy,and the main role of magnesium is to deoxidize,desulfurize,purify the molten iron and reduce inclusions.The morphology of wear marks is mainly plough grooves,curls,pits and a small number of microcracks.The main wear mechanisms are cutting wear,multiple plastic deformation and chisel wear.
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Basic Information:
DOI：
Chinese Library Classification Number:TG143[金属学及工艺—金属材料]
Citation Information:
The effect of rare earth magnesium modification concentration on the structure,hardness and wear resistance of Cr26 high chromium cast iron was studied by metallographic microscope,scanning electron microscopy,Rockwell hardness tester and dynamic abrasive wear tester,and the wear mechanism was discussed through the relationship between wear amount and wear trace morphology.The results show that the addition of rare earth magnesium changes the formation and growth environment of carbides,the morphology of carbides changes from long sheet and strip distribution to lump and nearly spherical distribution,and reduces the degree of matrix splitting.When the addition amount of rare earth magnesium reaches 0.6%,the microstructure and the distribution of carbides reaches its optimal state.The main role of rare earth is to purify the alloy liquid,refine the as-cast structure of the alloy,and the main role of magnesium is to deoxidize,desulfurize,purify the molten iron and reduce inclusions.The morphology of wear marks is mainly plough grooves,curls,pits and a small number of microcracks.The main wear mechanisms are cutting wear,multiple plastic deformation and chisel wear.
quote
| GB/T 7714-2015 | [1] GUO Ke-xing, XIA Peng-ju. Effect of Rare Earth Magnesium Modification on Wear Resistance of Permanent-mould High Chromium Cast Iron Cr26[J]. Rare Metals and Cemented Carbides, 2019(2): 39-44. |
| MLA | [1] GUO Ke-xing, and XIA Peng-ju. "Effect of Rare Earth Magnesium Modification on Wear Resistance of Permanent-mould High Chromium Cast Iron Cr26." Rare Metals and Cemented Carbides, no. 2, 2019, pp. 39-44. |
| APA | [1] GUO Ke-xing, & XIA Peng-ju. (2019). Effect of Rare Earth Magnesium Modification on Wear Resistance of Permanent-mould High Chromium Cast Iron Cr26. Rare Metals and Cemented Carbides(2), 39-44. |
| IEEE | [1] GUO Ke-xing and XIA Peng-ju, "Effect of Rare Earth Magnesium Modification on Wear Resistance of Permanent-mould High Chromium Cast Iron Cr26," Rare Metals and Cemented Carbides, no. 2, pp. 39-44, 2019. keywords: {high chromium cast iron;rare earth magnesium;modification;as-cast structure;wear resistance} |