时效温度对SAF 2507双相不锈钢性能及组织的影响  

Influence of Aging Temperature on Properties and Microstructure of SAF 2507 Duplex Stainless Steel

作　　者：王红[1] 梁盈[1] 陈炜[1] 

机构地区：[1]沈阳鼓风机集团股份有限公司,辽宁沈阳110869

出　　处：《热处理技术与装备》2017年第6期32-34,共3页Heat Treatment Technology and Equipment

摘　　要：研究了时效温度对SAF 2507双相不锈钢力学性能及显微组织的影响。结果表明,SAF2507双相不锈钢在进行300℃和350℃时效后组织为均匀、等轴的两相组织;在500℃时效后,有析出相产生,但是含量较少,冲击功略有下降;在400、800和850℃时效后,有大量析出相产生,造成冲击功很低,硬度范围非常离散。因此,鉴于SAF 2507双相不锈钢有很强的晶间析出物的倾向,应该严格控制时效温度。The influence of aging temperature on mechanical properties and microstructure of SAF 2507 duplex stainless steel was investigated. The results showed that SAF2507 duplex stainless steel was a uni- form and equiaxial two-phase structure after aging at 300 ℃ and 350 ℃. After aging at 500 ℃, the impact power decreased slightly and there was less precipitatated phase. After aging at 400, 800 and 850 ℃, a large number of precipitation phase arose, so that the impact power was very low and hardness range is ver- y discrete. The aging temperature of SAF 2507 duplex stainless steel should be strictly controlled, because SAF 2507 duplex stainless steel had a strong tendency of intergranular precipitation.

关 键 词：SAF 2507双相不锈钢 时效 析出相 冲击功 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG156.92[金属学及工艺—金属材料]