TC4-DT钛合金SH-CCT曲线的测定

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	TC4-DT钛合金SH-CCT曲线的测定
其他题名	Measurement of SH-CCT curves of TC4-DT titanium alloy
	赵栋 1; 董文超 2; 焦清洋 1; 权纯逸 1; 陆善平 2
	2020
发表期刊	金属热处理
ISSN	0254-6051
卷号	45.0 期号:005 页码:157-161
摘要	通过金相法进行了TC4-DT钛合金相变点温度Tβ测定,并利用热膨胀法进行了验证。对不同冷却速度下TC4-DT钛合金的热膨胀量曲线进行测绘,结合显微组织分析和硬度测试,绘制了TC4-DT钛合金的SH-CCT曲线。结果表明,TC4-DT钛合金的相变温度为(945±5)℃。当冷速小于10℃/s时,由β相转变的α相呈不同取向的集束状,同时,晶内出现网篮状α相;当冷速大于10℃/s后,组织为马氏体α’相+块状αm相;当冷速超过100℃/s后,组织为马氏体α’相。TC4-DT钛合金发生马氏体转变的开始温度为836℃,终了温度为760℃。
其他摘要	The transformation temperature Tβof TC4-DT titanium alloy was measured by metallographic method,and verified by thermal expansion method. According to the expansion curves at different cooling rates,the SH-CCT curves of the TC4-DT titanium alloy were plotted by means of metallographic analysis and hardness test. The results show that the transformation temperature of the TC4-DT titanium alloy is( 945 ± 5) ℃ . When the cooling rate is less than 10 ℃/s,the α phase transformed from β phase is clustered with different orientations,and the net basket-like α phase appears. The microstructure is composed of martensite α phase and massive αmphase when the cooling rate is greater than 10 ℃/s. As the cooling rate exceeds 100 ℃/s,the martensite α’ phase is formed. The start temperature and the finish temperature of martensite transformation in the TC4-DT titanium alloy are 836 ℃ and 760 ℃,respectively.
关键词	TC4-DT钛合金热膨胀法 SH-CCT曲线显微组织相变
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6738348
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157375
专题	中国科学院金属研究所
作者单位	1.沈阳飞机工业(集团有限公司 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	赵栋,董文超,焦清洋,等. TC4-DT钛合金SH-CCT曲线的测定[J]. 金属热处理,2020,45.0(005):157-161.
APA	赵栋,董文超,焦清洋,权纯逸,&陆善平.(2020).TC4-DT钛合金SH-CCT曲线的测定.金属热处理,45.0(005),157-161.
MLA	赵栋,et al."TC4-DT钛合金SH-CCT曲线的测定".金属热处理 45.0.005(2020):157-161.