Quantitative Microstructural Analysis of Ti-6Al-4V Alloy after Hot Forging Process by Means of Stereological Morphometry
Research on feasible and rigorous models capable of quantifying various microstructures have been received great attention due to their importance to the properties of titanium alloys. The complexity and diversity of microstructural information makes it rather difficult to quantify. In the present work,we present an automatic method to investigate the microstructural features of Ti-6Al-4V titanium alloy after hot forging. Standardized stereology protocol and quantitative metallography rules were used to characterize and quantify microstructure features quickly. The forging experiment are performed on a 3ton hammer in the temperature range from 930℃ to 1030℃ with 20℃ interval, and at different deformation of 20％, 50％ and 80％, respectively. The characterization of microstructure for specimens deformed to different temperatures and deformation degrees were examined. These microstructural features mainly include phase volume fraction, β grain size,thickness of a phase,and the morphology of crphase.etc. Six steps on image processing were presented. The results indicated the tremendous potential of these models and methods to characterize microstructures using advanced techniques, which are feasible,and explained with some examples.
Titanium alloy Ti-6Al-4V quantification stereology
Yuanfei Han Weidong Zeng Yu Sun Yongqing Zhao Ping Guo
State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xian 710072 North-west Institute for Nonferrous Metal Research,Xian 710016,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
523-526
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）