热处理对含硼奥氏体合金组织和性能的影响  

Effect of Heat Treatment on Microstructure and Property of the Boron-containing Austenite Alloy

作　　者：田光新[1] 刘俊友[1] 张艺[1] 刘杰[2] 李伟[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]北京北科德瑞冶金工程技术有限公司,北京100083

出　　处：《铸造技术》2009年第11期1418-1422,共5页Foundry Technology

基　　金：中小企业创新基金(07KW1003)

摘　　要：结合X射线衍射(XRD)、能谱分析(EDS),研究热处理温度和冷却方式对一种自行开发的新型含硼耐液态锌腐蚀合金组织和性能的影响。结果表明,对该合金的热处理过程中,析出和溶入两个过程是同时进行的。热处理温度为980℃时,无论空冷还是水冷,合金中的元素在基体上均匀析出;热处理温度为1030℃时合金中的元素析出和溶入达到动态平衡;热处理温度为1150℃时,伴随铸态下晶界网状硼化物断开,硼及其合金元素对基体产生固溶强化。合金硬度随热处理温度的升高先降低后升高;冲击韧度则随温度升高而增加。Heat treatment temperature and cooling method on the microstructure and properties of a new and self-developed type of alloy which is boron-containing and liquid zinc corrosion-resistant was studied by using XRD and EDS techniques, the process of precipitation and dissolution is carried out at the same time when the alloy is heat treat. Regardless of air cooling or water cooling, Elements of the alloy precipitate on the matrix uniformly when the heat treatment temperature is 980 ℃. Precipitation and dissolution achieve dynamic balance when the temperature is 1 030 ℃. When at 1 150 ℃, accompanied reticular boride of grain boundary under the cast disconnected, boron and alloying elements have a solid-solution strengthening on the substrate. Alloy hardness rise after the first lower with the heat treatment temperature rising. Impact toughness of the alloy rises with temperature rising.

关 键 词：含硼奥氏体合金 热处理温度 网状硼化物 硬度 冲击韧度 

分 类 号：TG156[金属学及工艺—热处理]