Table 3.

Values for the temperature and energy of the α → β transformation in titanium reported in the literature

Investigator	Ref. No.	Year	Specimen purity (%)	Transformation temperaturea (K)	Transformation energy (J·mol−1)
De Boer et al.	12	1936	Iodide	1155 ± 20	-
Greiner and Ellis	13	1949	99.9	1158	-
McQuillan	14	1950	99.93	1156	-
Duwez	15	1951	Iodide	1155 ± 4	-
Womer	16	1951	99.93	1156 to 1160	-
Kothen	17	1952	99.96	1154	3946
Edwards et al.	18	1953	99.88	1157 ± 4	-
Schofield	19	1956	Commercial	1158 and 1184	3400
Scott	20	1957	Iodide	1156 ± 2	4090 ± 100
Backhurst	21	1958	Commercial	-	3680
Golutvin	22	1959	Iodide	-	3430 ± 80
Kolhaas et al.	23	1965	99.8	1167	4150
Parker	24	1965	99.9+	-	3350 ± 200
Cormier and Claisse	25	1974	-	-	3200 ± 400
Martynyuk and Tsapkov	26	1974	99.74	-	4300
Present work			99.9+	1166 ± 7	4170 ± 200

^aAll temperatures and uncertainty limits in this table are those reported by the authors of the original papers. The majority of the reported temperatures were most likely based on IPTS-48, which would necessitate an addition of 1.6 K to correct them to IPTS-68.