热处理对316L不锈钢丝增强铝基复合材料性能的影响

Influence of Heat Treatment on Properties of Aluminum Matrix Composite Reinforced with 316L Steel Wires

以?0.3mm的316L不锈钢丝和ZL101为反应源,通过压铸和热处理工艺,得到不同反应程度的316L不锈钢丝增强铝基复合材料。通过扫描电镜、显微硬度计和摩擦磨损试验机对该复合材料进行分析。结果表明:经热处理后,压铸态的该复合材料中,316L丝材与铝基材间发生了反应,形成了条形的、呈放射状分布的金属间化合物,其硬度为459HV0.1,达到基体硬度(123HV0.1)的三倍以上;在载荷为10 N的干滑动磨损条件下,经525℃+1.5h处理后的复合材料,其耐磨性是铸态复合材料耐磨性的4倍。

Taking 316L stainless steel wires, 0.3 mm in diameter, and ZL101 as reactive sources, the various composite was fabricated by die casting and heat treatment technologies. The composite was analyzed by SEM, microhardness tester and friction and wear tester. The results show that, after heated treatment, the strip-shape metallic compounds present as radial distribution which are formed between the reinforcement of 316L stainless steel wires and ZL101 matrix inside the die-casting state composite. The microhardness of metallic compound is 459HV0.1 and 3 times higher than that of matrix（123HV0.1）.Under the conditions of dry sliding wear and 10 N loads, the wear rate of the composite after heat treatment process of 525℃＋1.5h is 4 times higher than that of die-casting state composite.