(清華大學(xué)材料科學(xué)與工程系，北京100084)
摘 要: 首次采用原子力顯微鏡(AFM)對(duì)Cu-Zu-Al合金中的馬氏體浮突和貝氏體浮突進(jìn)行了定量觀測(cè)。在此基礎(chǔ)上，將AFM的測(cè)量結(jié)果與馬氏體相變表象理論(PTMC)進(jìn)行了對(duì)比，發(fā)現(xiàn)馬氏體浮突角與PTMC理論相符合，而貝氏體浮突角與PTMC理論不符合，說(shuō)明貝氏體相變機(jī)制與馬氏體不同，不可能是切變機(jī)制；同時(shí)發(fā)現(xiàn)貝氏體浮突是一組貝氏體亞單元所造成的浮突組成的浮突群。
關(guān)鍵字: 表面浮突 馬氏體 貝氏體 原子力顯微鏡
AND BAINITE TRANSFORMATION IN Cu-Zn-Al
ALLOY WITH ATOMIC FORCE MICROSCOPY
3Bao Xiangzheng, Yang Yeyuan, Zheng Yankang
（Department of Materials Science and Engineering,Tsinghua University,Beijing 100084）
Abstract:Surface reliefs accompanying martensite and bainite transformation in Cu-Zn-Al alloy have been investigated with atomic force microscopy (AFM) quantitatively. The phenomenal theory of martensite crystallography (PTMC) was applied to examine the surface relief angle obtained by AFM and agreeable results of martensite are available, however, the results of bainite are different from PTMC, indicating a non-shear mechanism of bainite. Also, the inner structure of surface relief with martensite and bainite were investigated.
Key words: surface relief martensite bainite AFM
