Influence of Cu mass fraction on properties of Fe-Ni-Mn based binder
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摘要: 采用粉末冶金法制备Fe-Ni-Mn基结合剂,用电子万能试验机、抗冲击试验机等设备,研究烧结温度对纯钴基结合剂力学性能的影响,并探究不同质量分数的铜对Fe-Ni-Mn基结合剂性能的影响。结果表明:烧结温度控制在850~880℃时,纯钴粉结合剂成形密度达到最大,为8.75 g/cm3;不同牌号钴粉结合剂的冲击强度分别达到最大值18.92 kJ/m2和17.32 kJ/m2。当铜质量分数为15%~20%时,Fe-Ni-Mn基结合剂具有较好的力学性能,其抗弯强度最大可达1 202.19 MPa,为纯钴结合剂强度的75%;冲击强度最大可达9.73 kJ/m2,为纯钴结合剂强度的65.7%。铜含量增加可促进Fe-Ni-Mn基结合剂内部形成高强合金,使胎体韧性迅速提高。
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关键词:
- 铜含量 /
- Fe-Ni-Mn基结合剂 /
- 结合剂强度
Abstract: Fe-Ni-Mn based binder was prepared by powder metallurgy. The effects of different mass fraction of copper on the properties of Fe-Ni-Mn based binder were studied by electronic universal testing machine and impact testing machine. Results show that under the conditions of sintering temperature 850 to 880℃, pure-Co binder reaches its maximum forming density, which is 8.75 g/cm3 and that under the same condition, the impact strengths of different brand Co binders are at their tops, namely 18.92 kJ/m2 and 17.32 kJ/m2. It is also found that when Cu content is 15wt% to 20wt%, the Fe-Ni-Mn based binder has better mechanical property with maximum bending strength of 1 202.19 MPa, 75% of that of pure-Co binder, and maximum impact strength of 9.73 kJ/m2, 65.7% of that of pure-Co binder. In addition, increase of Cu content will promote a high-strength alloy to form inside the Fe-Ni-Mn based binder, thus quickly increasing the toughness of the matrix.-
Key words:
- copper content /
- Fe-Ni-Mn based binding agent /
- binder strength
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