304不锈钢高温力学性能研究  

Study on High Temperature Mechanical Properties of 304 Stainless Steel

作　　者：董方[1] 郄俊懋 辛瑞峰[1] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《热加工工艺》2014年第16期96-98,101,共4页Hot Working Technology

摘　　要：采用Gleeble-1500D热模拟机,测试了700～1400℃时304不锈钢的高温强度及塑性随温度的变化规律,确定了该钢种的零强度温度（ZST）与零塑性温度（ZDT）。结果表明304不锈钢的ZST为1370℃,ZDT为1350℃左右;高温屈服强度及抗拉强度随温度的升高而降低,1250℃之后屈服强度及抗拉强度都降低至25 MPa以下,强度变差;第一脆性区的温度为1250℃到熔点,第三脆性区的温度为950～1050℃,在1050～1200℃内断面收缩率均在65%以上,塑性较好。The type Gleeble-1500 D thermal simulation testing machine was employed to test the change law of strength and ductility of 304 stainless steel during 700-1400 ℃, and meanwhile, the temperature of ZST the ZDT was decided. The results show that the ZST is about 1370 ℃ and the ZDT is about 1350 ℃. The yield strength and tensile strength decrease with temperature increasing and the strength becomes worse. The yield strength and tensile strength decrease under 25 MPa above 1250 ℃. The first brittleness temperature is 1250 ℃ to melting temperature and the third brittleness temperature is 950-1050 ℃.At 1050-1200℃, the reduction of area is higher than 65%, and the hot ductility is well.

关 键 词：304不锈钢 力学性能 高温特性 

分 类 号：TG142.12[一般工业技术—材料科学与工程]