CAJ | 학술논문

利用金相、X射线衍射、透射电镜及万能拉伸试验机等测试手段，研究了TC11钛合金热旋压成形的组织、物相、微观结构和力学性能。结果表明，热旋压变形后，TC11钛合金的洛氏硬度提高了27%，强度达到了1200MPa；热旋后TC11钛合金组织呈纤维状，α-Ti相晶粒折优取向由（101）晶面向（002）晶面转变，β相被次生α相隔断，呈不连续形貌，β转组织有小长宽比的α柱条，次生α相及颗粒物弥散分布在TC11钛合金的基体组织中。热旋压变形后的这种微观组织结构，使TC11钛合金在宏观上表现出强度和塑性良好的综合力学性能。
이용금상、X사선연사、투사전경급만능랍신시험궤등측시수단，연구료TC11태합금열선압성형적조직、물상、미관결구화역학성능。결과표명，열선압변형후，TC11태합금적락씨경도제고료27%，강도체도료1200MPa；열선후TC11태합금조직정섬유상，α-Ti상정립절우취향유（101）정면향（002）정면전변，β상피차생α상격단，정불련속형모，β전조직유소장관비적α주조，차생α상급과립물미산분포재TC11태합금적기체조직중。열선압변형후적저충미관조직결구，사TC11태합금재굉관상표현출강도화소성량호적종합역학성능。
The microstructure and mechanical properties of TC11 titanium alloy after hot-spinning are investigated by optical microscope, X-Ray diffraction, transmission electronic microscope and tensile testing machine. The results show that the hardness of TC11 titanium alloy increases 27%, the strength reaches 1200MPa, the grains are stretched with the axial feed direction and are staved along with the radial direction, and the optimal orientation ofα-Ti organization transfers from (101) crystal indices to (002) after hot-spinning deformation. SEM and TEM observed thatβ-Ti is separated by secondaryα-Ti, showing a discontinuous morphology, and small length-width ratioα-Ti column existed in β-Ti shift organization. The secondary α-Ti and particles are dispersed in the TC11 titanium alloy matrix organization, and the microstructure makes the strength and plasticity of TC11 titanium alloy a good comprehensive performance in macroscopic.