In Situ SEM/EBSD Observations of hcp/bcc Phase Transformations in Commercially Pure Titanium
In situ observations of the phase transformation phenomena between hcp (α) and bec (β) phases in commercially pure titanium were attempted using SEM/EBSD technique combined with heating stage. Commercially pure titanium sheets with recrystallized α grain microstructure and typical TD-split texture component (01-13<2-l-10>) were manufactured by cold rolling and annealing process for this investigation. As for the a to β phase transformation during heating process, the evolved β grains have the Burgers OR with the initial α grain microstructure. Moreover, the specific orientation components (001<100>) tend to be dominant in the β phase in the observed area. The reverse phase transformation during cooling process also shows the Burgers OR between the nucleating a grains and the parent β grains. Especially, the developed α grains have the Burgers OR with the both adjacent parent β grains,having a rotation about a common 110 pole. This variant selection is supposed to be related to the above-mentioned preferred orientation distribution of the β phase. From these results,some variant selection occurs during α/β phase transformations and it is revealed that these direct observations are effective to light on the phase transformation phenomena from the viewpoint of the change in local texture and microstructure.
Pure titanium phase trans formation in situ observation electron back scatter diffraction (EBSD)
Katsushi Matsumoto Takeshi Kudo Shogo Murakami Yoshio Itsumi
Materials Research Laboratory,Technical Development Group,Kobe Steel Ltd.,Kobe 651-2271,Japan Production Technology Section,Titanium Plant,Titanium Division,Iron & Steel Business,Kobe Steel Ltd. Titanium Research & Development Section,Titanium Division,Iron & Steel Business,Kobe Steel Ltd.,Taka
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
556-559
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）