CAJ | 학술논문

利用膨胀仪测试了Cu-Zn合金高压热处理前、后在25～700℃的热膨胀系数;采用金相显微镜、X射线衍射仪及差示扫描量热分析仪对Cu-Zn合金高压热处理前、后的组织进行研究；探讨高压热处理对Cu-Zn合金的组织及热膨胀性能的影响.结果表明:高压热处理能细化Cu-Zn合金的组织,增大Cu-Zn合金的热膨胀系数,同时,也能使Cu-Zn合金的热膨胀系数在α-T曲线上出现高峰值,且压力越大,热膨胀系数峰值越小.
이용팽창의측시료Cu-Zn합금고압열처리전、후재25～700℃적열팽창계수;채용금상현미경、X사선연사의급차시소묘량열분석의대Cu-Zn합금고압열처리전、후적조직진행연구；탐토고압열처리대Cu-Zn합금적조직급열팽창성능적영향.결과표명:고압열처리능세화Cu-Zn합금적조직,증대Cu-Zn합금적열팽창계수,동시,야능사Cu-Zn합금적열팽창계수재α-T곡선상출현고봉치,차압력월대,열팽창계수봉치월소.
The thermal expansion coefficients of Cu-Zn alloy before and after high pressure treatment were measured by thermal expansion instrument in the temperature range of 25-700 ℃,and the microstructure and phase transformation of the alloy were examined by optical microscope,X-ray diffractometer (XRD) and differential scanning calorimeter (DSC).Based on the experimental results,the effects of high pressure treatment on the microstructure and thermal expansion of Cu-Zn alloy were investigated.The results show that the high pressure treatment can refine the grain and increase the thermal expansion coefficient of the Cu-Zn alloy,resulting in that the thermal expansion coefficient exhibits a high peak value on the α-T curve,and the peak value decreases with increasing the pressure.