摘要
研究了Zn-25%Al-X%Cu合金的力学性能和在油润滑条件下的耐磨性。研究发现,随着Cu含量升高,该合金的抗拉强度逐渐升高,并在Cu含量达到6.64%时达到最大值369MPa;伸长率在Cu含量为2.24%时达到最大值14.1%,Cu含量超过2.24%后,随Cu含量升高,延伸率逐渐下降;硬度的变化与伸长率的变化相反,Zn-25%Al-2.24%Cu的硬度最低(HB98)。在Zn-25%Al-0.62%Cu合金的枝晶间未见到ε(CuZn4)相,随着Cu含量升高,合金中的ε相增多,其耐磨性逐渐升高。
The mechanical properties and wear resistance in the oil lubricated condition for alloys Zn25%AlX%Cu were studied. It was found that with increasing of the copper content ultimate tensile strength of alloys gradually increased up to the maximum value 369 MPa with the copper content 6.64% while the elongation of the alloy Zn25%Al2.24%Cu had the maximum value 14.1% with 2.24%Cu. The elongation of alloys decreased in an excess above 2.24% copper. The hardness change of alloys was opposed to the elongation variation and the hardness of the alloy Zn25%Al2.24%Cu had the minimum value (HB98). No εphase appear in interdendrite zones of the alloy Zn25%Al0.62%Cu, but εphases appeared in interdendrite zones of the alloy Zn25%Al2.24%Cu and increased with increasing of the copper content. With increasing of the copper content the wear resistance of alloys gradually increased.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
1998年第3期16-18,共3页
Special Casting & Nonferrous Alloys
关键词
锌合金
铜含量
力学性能
耐磨性
Zinc Based Alloy, Copper, Mechanical Properties, Wear Resistance