Transactions of Materials and Heat Treatment

Title：Influence of forging temperature on structure and mechanical

Authors： Shi Xiaoyun Zhang Xiaoyuan Mao Youchuan Wang Xiaoliang Liu Guangfa

Unit： Western Superconducting Technologies Co. Ltd.

KeyWords： TC21 titanium forging temperature room temperature tensile strength room temperature yield strength microstructure

ClassificationCode：

year,vol(issue):pagenumber：2015,40(1):14-16

Abstract：

The influence of forging temperature on microstructure and mechanical property of TC21 alloy plate was investigated. Three TC21 alloy bars with a specification of Φ300 mm×400 mm were prepared for the forging test. The microstructure was observed and room temperature tensile test was analyzed under the forging temperatures of Tβ+15℃, Tβ+30℃ and Tβ+45℃ respectively based on the same forging deformation. The results show that room temperature tensile strength Rm and room temperature yield strength Rp0.2 on short transversal, long transversal and longitudinal direction increase with the rise of forging temperature when TC21 forging plate deforms above transformation temperature. Because forging temperature was above the transformation temperature, the macrocopic structure of three plates is clear grain, and grain grows clearer and larger with rising forging temperature. The microcopic structure of three plates is basketwave structure which is formed by much stagger flat beam α phase. α phase orientation grows more consistent, strip α phase is increased, and the thickness and length of α phase are increased with the rise of forging temperature

Funds：

史小云（1975-），女，硕士，高级工程师

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