球磨时间对激光烧结合成Ni-Al合金性能的影响

李刚; 程希文; 禹治超; 王鹏

doi:10.15980/j.tzzz.2012.11.031

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球磨时间对激光烧结合成Ni-Al合金性能的影响
Effect of Milling Time on Microstructure and Mechanical Properties of Ni-Al Alloys Prepared by Self-Propagating Reaction Synthesis
2012年32卷第11期页码：1008-1010
纸质出版日期： 2012 ，
DOI： 10.15980/j.tzzz.2012.11.031

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[1]李刚,程希文,禹治超,王鹏.球磨时间对激光烧结合成Ni-Al合金性能的影响[J].特种铸造及有色合金,2012,32(11):1008-1010.

Li Gang, Cheng Xiwen, Yu Zhichao, et al. Effect of Milling Time on Microstructure and Mechanical Properties of Ni-Al Alloys Prepared by Self-Propagating Reaction Synthesis[J]. Special Casting & Nonferrous Alloys, 2012,32(11):1008-1010.
[1]李刚,程希文,禹治超,王鹏.球磨时间对激光烧结合成Ni-Al合金性能的影响[J].特种铸造及有色合金,2012,32(11):1008-1010. DOI： 10.15980/j.tzzz.2012.11.031.

Li Gang, Cheng Xiwen, Yu Zhichao, et al. Effect of Milling Time on Microstructure and Mechanical Properties of Ni-Al Alloys Prepared by Self-Propagating Reaction Synthesis[J]. Special Casting & Nonferrous Alloys, 2012,32(11):1008-1010. DOI： 10.15980/j.tzzz.2012.11.031.

摘要

采用激光点火自蔓延烧结技术制备了Ni-26Al（摩尔分数）合金。对球磨时间分别为0、5和10h烧结合金进行了密度测试、微观组织观察、XRD分析以及硬度、耐磨性等力学性能测试。结果表明

烧结合金物相由γ-Ni、Ni3Al和Al2O3相构成。烧结合金性能随球磨时间的延长而提高

球磨10h后其密度达5.85g/mm3

洛氏硬度（HRC）为62

单位面积磨损量为4.43×10-4g/mm2。

Abstract

Ni-26Al alloys （ atomic fraction

%） was prepared by laser-induced self-propagating reaction synthesis. Effects of milling time

such as 0

5 and 10 h

on the density、microstructure、composition and mechanical properties of the Ni-26Al prepared were investigated by density measurement

SEM （scanning electron microscope）

XRD （X-ray diffraction） and tensile testing. The results show that the sintered alloy is composed of Ni3Al and γ- Ni 、Al2O3 phases. The sintering performance of the alloy prepared is improved increasing with increasing in milling time

and after 10 h milling

the density

Rockwell hardness and wearing capacity are 5.85 g/mm3

62 HRC and 4.43×10-4 g/mm2

respectively.