高强IF钢合金化热镀锌板镀层相结构及抗粉化性能  

Phase structure and powdering resistance of galvannealed coatings on high strength IF steel

作　　者：王川[1] 滕华湘[2] 李声慈[1] 傅影[1] 康永林[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]首钢技术研究院,北京100043

出　　处：《金属热处理》2013年第9期74-77,共4页Heat Treatment of Metals

摘　　要：采用扫描电镜(SEM)、X射线衍射(XRD),辉光放电光谱(GDOES)及60°V弯试验法研究了高强IF钢合金化热镀锌板镀层相结构及抗粉化性能。结果表明,合金化温度在500℃时,镀锌层表面以粒状δ相为主,同时还有部分柱状ζ相;合金化温度在550℃和580℃时,镀层为致密的粒状δ相。随合金化温度升高,镀层的抗粉化性降低。当镀层及次表层相结构以δ相为主,且含有部分ζ相时,其抗粉化性较好。Phase structure and powdering resistance behavior of the coatings on industrially galvannealed high strength IF steel were investigated by means of scanning electron microscope （ SEM ）, X-ray diffraction （ XRD ）, glow discharge optical emission spectrometry （GDOES） and 60° V-bending test. The results show that when galvannealed at 500 ℃, the coating consists of δ and ζ phase while the majority of which is 8 phase ; when galvannealed at 550 ℃ and 580 ℃, the coating consists of δ phase, the powdering resistance of the coatings become weaker with galvannealing temperature increasing. When the coatings consists of 8 phase with a little ζ phase, the powdering resistance behavior is well.

关 键 词：合金化热镀锌 高强IF钢 相结构 抗粉化性 

分 类 号：TG162.83[金属学及工艺—热处理]