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EFFECTS OF RAPID HEATING CONTINUOUS ANNEALING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ULTRA HIGH-STRENGTH TRIP-AIDED STEEL
Alternative TitleEFFECTS OF RAPID HEATING CONTINUOUS ANNEAL ING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ULTRA HIGH-STRENGTH TRIP-AIDED STEEL
Xu Yunbo1; Hou Xiaoying1; Wang Yeqin2; Wu Di1
2012
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume48Issue:2Pages:176-182
AbstractThe effects of rapid heating continuous annealing on microstructure and mechanical properties of ultra-high strength and low silicon TRIP steel containing phosphorus and vanadium were investigated. The results show that the yield and tensile strengths are increased with increasing intercritical annealing temperature during rapid continuous annealing. However, the intercritical annealing temperature can not increase blindly to ensure its excellent combined mechanical properties. When the heating rate is 80 degrees C /s and intercritical annealing temperature is 880 degrees C the retained austenite not only contains fine blocky structure, but also a large amount of interlath retained austenite films A great amount of V(C, N) precipitates exists within ferritic matrix, and the sizes of most of the precipates are in the range from 4 to 9 nm. The tested steel has excellent mechanical properties: R-m= 1010 MPa, R-P0.2=690 MPa, delta=23.6%, n=0.27, r=1.17, the product of strength and ductility (R-m x delta) is 23836 MPa.%. If the intercritical annealing temperature is too high or too low, the comprehensive mechanical properties will be deteriorated since the volume fraction of retained austenite reduces, morphology changes and its size increase.
KeywordRETAINED AUSTENITE GRAIN-REFINEMENT SI TRANSFORMATION NB PHOSPHORUS ALUMINUM SHEET AL TRIP steel containing vanadiun rapid heating continuous annealing mechanical property retained austenite
Indexed ByCSCD
Language英语
CSCD IDCSCD:4521951
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/144933
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Laiwu Iron & Steel Grp Co Ltd, Laiwu 271104, Peoples R China
Recommended Citation
GB/T 7714
Xu Yunbo,Hou Xiaoying,Wang Yeqin,et al. EFFECTS OF RAPID HEATING CONTINUOUS ANNEALING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ULTRA HIGH-STRENGTH TRIP-AIDED STEEL[J]. ACTA METALLURGICA SINICA,2012,48(2):176-182.
APA Xu Yunbo,Hou Xiaoying,Wang Yeqin,&Wu Di.(2012).EFFECTS OF RAPID HEATING CONTINUOUS ANNEALING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ULTRA HIGH-STRENGTH TRIP-AIDED STEEL.ACTA METALLURGICA SINICA,48(2),176-182.
MLA Xu Yunbo,et al."EFFECTS OF RAPID HEATING CONTINUOUS ANNEALING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ULTRA HIGH-STRENGTH TRIP-AIDED STEEL".ACTA METALLURGICA SINICA 48.2(2012):176-182.
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