CAJ | 학술논문

研究了固溶处理和时效处理对新型Ti-Nb-Cr-Al系钛合金力学性能的影响,并用环境扫描电镜(ESEM)进一步分析了钛合金组织、断口形貌与力学性能之间的关系.结果表明:时效处理没有改变热轧态的纤维组织形态,但由于有大量弥散相析出,其强度和弹性模量显著提高,塑性明显降低.通过优化同溶处理与时效处理可以获得良好的综合力学性能,其弹性模量对显微组织形态比较敏感.
연구료고용처리화시효처리대신형Ti-Nb-Cr-Al계태합금역학성능적영향,병용배경소묘전경(ESEM)진일보분석료태합금조직、단구형모여역학성능지간적관계.결과표명:시효처리몰유개변열알태적섬유조직형태,단유우유대량미산상석출,기강도화탄성모량현저제고,소성명현강저.통과우화동용처리여시효처리가이획득량호적종합역학성능,기탄성모량대현미조직형태비교민감.
The influence of solution and aging treatment on the mechanical properties of a new type of Ti-Nb-Cr-Al system titanium alloy was studied.The relationships between microstructure,fracture images and mechanical properties were analyzed by environment scanning electron microscope (ESEM).The results show that the microstructure of hot rolling state is not changed by aging treatment,but there are lots of micro-size dispersion phase precipitate along the rolling fiber direction so that the strength and Young's modulus of the alloy significantly increase, and its plastic property obviously decreases. Ti-Nb-Cr-Al system titanium alloy can acquire good integrated mechanical property by optimum solution and aging treatment processing. The Young's modulus is very sensitive to the microstructure.