摘要
对电冶熔铸的DGJW20复合材料进行了球化退火、淬火和回火处理。采用金相检验、XRD、力学性能测试等方法研究了该复合材料经上述工艺热处理后的组织和力学性能。结果表明,随着淬火温度的升高,材料的硬度先升后降,抗弯强度则先升后降再上升;980℃淬火、200℃回火试样的硬度最高,为84.4 HRA,而1000℃淬火试样的抗弯强度最高,达到929 MPa。经980℃淬火、200℃回火的DGJW20复合材料组织和力学性能最佳,可用于处理耐磨件。
A electromelted and cast DGJW30 composite was subjected to spheroidizing, hardening and tempering. The microstructure and mechanical properties of the DGJW20 composite treated by the above-mentioned procedures were investigated by metallographic test, XRD and mechanical property measurements. The results show that as the austenitizing temperature becomes higher, the hardness first increases and then decreases, the bending strength first increases and then decreases and increases once again for the composite. The sample quenched from 980 ~C and tempered at 200 ~C offered the highest hardness up to 84.4 HRA, whereas the sample quenched from 1000 ℃ gave the highest bending strength up to 929 MPa. Quenching from 980℃ and then tempering at 200 ℃ will allow the DGJW20 composite to develop the best manufacture and mechanical properties, being adaptable to wear-resisting parts
出处
《热处理》
CAS
2015年第4期5-8,共4页
Heat Treatment
基金
安徽建筑大学青年科研专项基金(2014XQZ04)
