成分计算法和差示量热法确定TA24合金相变点

doi:10.13228/j.boyuan.issn1001-0777.20230046

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Abstract The β transformation temperatures of 11 pieces of TA24 near α titanium alloy samples in 4 specifications were measured by composition calculating method and differential scanning calorimetry. In the composition calculating method, the β transformation temperature of titanium alloy was determined according to the contribution rate of alloying elements and impurity elements to the phase transformation temperature. In the differential scanning calorimetry, the β transformation temperature was measured based on the heat change of titanium alloy during phase transition. The results showed that under the condition of 95% confidence, the deviation between methods was (-1.3±5.8) ℃, and the absolute value of deviation was (2.4 ± 3.9) ℃. The measurement results of composition calculating method and differential scanning calorimetry method were consistent, and the deviation was between -6.9 ℃ and 2.4 ℃, which were both less than the allowable deviation (±8 ℃) of two parallel tests in the laboratory specified by HB 6623.1-1992 and HB 6623.2-1992. The composition calculating method could be used as a convenient and effective method to quickly predict the β transformation temperature of TA24 titanium alloy.

Key words： TA24 composition calculating method differential scanning calorimetry phase transformation point Ti75

Received: 26 May 2023

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	Articles by authors
	LI Chunhui
	ZHANG Congyi
	WANG Shuo
	CHEN Jieming
	LIU Pan
	ZHANG Xinyao

Cite this article:

LI Chunhui,ZHANG Congyi,WANG Shuo等. Determination of phase transformation point of TA24 alloy by composition calculating method and differential scanning calorimetry[J]. PHYSICS EXAMINATION AND TESTING, 2024, 42(1): 32-36.

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http://www.chinamet.cn/Jweb_wlcs/EN/10.13228/j.boyuan.issn1001-0777.20230046 OR http://www.chinamet.cn/Jweb_wlcs/EN/Y2024/V42/I1/32

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