【作者】 孙建春； 陈登明； 马毅龙； 李蕊伶；

【Author】 Jianchun SUN,Dengming CHEN,Yilong MA,Ruiling LI School of Metallurgy & Materials Engineering of Chongqing University of Science & Technology,Chongqing,China,401331

【机构】 重庆科技学院冶金与材料工程学院；

【摘要】 3J1(Ni36CrTiAl)恒弹性合金可以通过热处理在很大范围内改变其性能以满足各种需要。本文在820°C对该合金进行2h时效处理,利用金相显微镜对处理前后材料的组织结构进行分析;利用扫描电子显微镜(SEM)对其拉伸断口进行了观察分析。结果表明,时效处理后,材料内部出现了大量的第二相析出物,材料的韧性极大提高,断口表现为典型的韧窝形貌。更多还原

【Abstract】 Elastic alloys have good physical properties which make them widely used and the people’s continuous research enthusiasm. In This paper a 3J1 tensile sample was aged at 820℃ for 2 h in the SKY-12 heat treatment furnace. The microstructure of 3J1 alloy was observed by optical microscopy and the fracture was investigated by electron scanning microscopy(SEM) . Results showed that there were many dispersed second phases in 3J1 alloy after aging. Which lead to the enhance of fracture toughness of 3J1 alloy and the fractograph exhibited typical ductile dimple fracture pattern.更多还原