| Cr_3C_2/Ni_3Al表面堆焊合金层的特征分析 |
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| 引用本文： | 安同邦,骆合力,彭云,朱晓云,田志凌.Cr_3C_2/Ni_3Al表面堆焊合金层的特征分析[J].兵器材料科学与工程,2010,32(2):48-51. |
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| 作者姓名： | 安同邦 骆合力 彭云 朱晓云 田志凌 |
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| 作者单位： | 昆明理工大学,云南,昆明,650093;钢铁研究总院,北京,100081;钢铁研究总院,北京,100081;昆明理工大学,云南,昆明,650093 |
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| 摘 要： | 对Cr3C2/Ni3Al复合堆焊合金层的元素分布、横截面组织和硬度等进行分析和研究。结果表明,堆焊过程中,母材表面半熔化区的形成使堆焊层与母材实现冶金结合,堆焊层金属逆热流方向与母材呈联生方式长大,形成Cr3C2强化的Ni3Al基堆焊层;Ni3Al基体对Cr3C2起到保护和支撑作用,弥散分布的硬质强化相Cr3C2,硬度高,抗磨损性好,显著提高堆焊层硬度,并对Ni3Al基体起保护作用;堆焊层与母材冶金结合,无裂纹,不易剥落,使得部件整体的耐磨性能提高。
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| 关 键 词： | Cr_3C_2 Ni_3Al 耐磨性 |
Characteristic analysis on Cr_3C_2/Ni_3Al hardfacing alloy layer |
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| AN Tongbang,LUO Heli,PENG Yun,ZHU Xiaoyun,TIAN Zhiling.Characteristic analysis on Cr_3C_2/Ni_3Al hardfacing alloy layer[J].Ordnance Material Science and Engineering,2010,32(2):48-51. |
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| Authors: | AN Tongbang LUO Heli PENG Yun ZHU Xiaoyun TIAN Zhiling |
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| Affiliation: | 1.Kunming University of Science and Technology;Kunming 650093;China;2.Central Iron & Steel Research Institute;Beijing 10081;China |
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| Abstract: | Elements distribution,microstructure of the cross-section surface and the hardness of the Cr3C2/Ni3Al hardfacing alloy layer were studied.The results show that,in the welding process,surfacing layer and the base metal is metallurgically bonded by the forma-tion of partially melted zone on base metal surface,the hardfacing layer of Ni3Al strengthened by Cr3C2 is formed against the direction of heat flow which showes adnate growing style with base metal;The matrix of Ni3Al can protect and hold-up the Cr3C2,an... |
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| Keywords: | Cr3C2 Ni3Al wear resistance |
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