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URN etd-0912107-174924 Statistics This thesis had been viewed 4273 times. Download 9176 times. Author Sheng-Yuan Hsiao Author's Email Address email@example.com Department Materials Engineering Year 2006 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 98 Title Strain Softening and Anneal Hardening in Alloys Keyword anneal hardening strain softening strain softening anneal hardening Abstract In this study thermomechanical processings were applied to four alloys, including AZ31 and L9 Mg alloys, 6061 Al alloy and Cu-30%Zn alloy, for the strain softening and anneal hardening studies. By using differential scanning calorimetry (DSC), optical microscopy (OM), and elevated temperature compression test. The relationships between microstructure evolution and the behaviors of strain softening and anneal hardening were examinated. The results showed that the elevated temperature strength of alloys is inversely proportional to the applied pre-strain, which leads to the strain softening effect. An anneal treatment, on the other hand, increases the elevated temperature strength of alloys, and the magnitude of anneal hardening was found to be proportional to the magnitude of pre-strain. Advisor Committee Chih-Fu Yang - advisor
Files Date of Defense 2007-07-31 Date of Submission 2007-09-12