CAJ | 학술논문

通过对QBe2合金薄板的力学及物理性能进行测试，结合其不同热处理状态下的扫描电镜组织，研究了热轧终轧温度对形变时效状态QBe2合金薄板性能的影响.结果表明：热轧终轧温度在540~630℃范围内，较低终轧温度（540℃）的QBe2合金薄板经过形变时效热处理后显微组织中β相含量较高，并且析出物沿晶界局部脱溶的现象更为严重.热轧终轧温度从540℃升高到630℃，形变时效态下QBe2合金薄板的强度提高80~90 MPa，伸长率提高1.2%，弹性模量提高近10 GPa，导电率降低1.8%.造成不同热轧终轧温度的形变时效状态QBe2合金薄板性能不同的主要原因是显微组织中β相含量不同.
통과대QBe2합금박판적역학급물이성능진행측시，결합기불동열처리상태하적소묘전경조직，연구료열알종알온도대형변시효상태QBe2합금박판성능적영향.결과표명：열알종알온도재540~630℃범위내，교저종알온도（540℃）적QBe2합금박판경과형변시효열처리후현미조직중β상함량교고，병차석출물연정계국부탈용적현상경위엄중.열알종알온도종540℃승고도630℃，형변시효태하QBe2합금박판적강도제고80~90 MPa，신장솔제고1.2%，탄성모량제고근10 GPa，도전솔강저1.8%.조성불동열알종알온도적형변시효상태QBe2합금박판성능불동적주요원인시현미조직중β상함량불동.
In order to study the effect of hot rolling finishing temperature on the properties of deformation-aging state Q Be2 alloy sheet, the mechanical and physical properties of QBe2 alloy sheets are measured, combined with scanning electron microscope (SEM) microstructure of different heat treatment state. The results show that the deformation-aging state QBe2 alloy sheet with a lower hot rolling finishing temperature (540 ℃) contains larger amount of βphase and presents a more severe phenomenon of grain boundary desolvation when the hot rolling finishing temperature ranges from 540 ℃ to 630 ℃. When the hot rolling finishing temperature increases from 540 ℃ to 630 ℃, the strength of deformation-aging state QBe2 alloy sheet increases approximately 80~90 MPa. The elongation increases by 1.2%and the Young ’s modulus increases approximately 10 GPa while the conductivity decreases by 1.8 %. Due to different contents of β phase in the microstructure, the properties of deformation-aging state QBe2 alloy sheets with various hot rolling finishing temperatures are different.