欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
通过铜模吸铸法制备直径为3mm的Mg-Zn-Ca三元共晶合金，按成分比例配制的合金分别为Mg7zZn-。Cal3、Mg62ZTl36Caz、Mg．zn22Ca64和Mgz6ZTl48Caz6．利用X射线衍射仪（XRD）、光学显微镜（0M）、微机控制电子式万能试验机和扫描电子显微镜（SEM）对MgZnCa合金的组织结构、力学性能和断口形貌进行研究．结果表明：Mg72 Znl5Cal3、Mgl4ZnzzCa64和Mg26Zn4sCa26合金形成非晶相和晶体相共存的复合材料，Mg62Zn36Ca2形成纯晶体；其中强度最高、塑性最好的是Mg，tZnzzCa64，其强度和塑性应变分别为548MPa和O．9％；对于该合金系，强度随结晶度降低而升高；压缩断口形貌显示，Mg7zZnl5Cal3、Mg62Zna6Caz、Mgl4ZnzzCa64和Mgz6Zn4sCa26合金均为脆性断裂．
英文摘要：
The Mg-Zn-Ca ternary eutectic alloys were prepared in the form of rod of 3. 0 mm in diameter by using copper mold suction casting method. The alloys formulated in proportion to their compositions were MgTz Znls Ca13, Mg62 Zna6 Ca2, Mg14 Zn22 Ca64 and Mg26 Zrq8 Ca26. The microstructures, mechanical properties and fracture surface morphology were analyzed with X-ray diffractometry （XRD）, optical mi- croscope（OM）, micro-electric universal testing machine and scanning electron microscopy （SEM）, com- puter-controlled electron universal tester, and scanning electron microscope. The result showed that in al- loys Mg72 Znls Cala, Mgl4 Zn22 Ca64 and Mg26 Zn48 Ca26 composites of amorphous and crystal phase were formed, and in alloy Mg62 Zn36Ca2 crystal formed. The strength and plastic strain of Mg14 Zn22Ca64 were 548 MPa and 0.9%, respectively. For the serial alloys,the fracture strength increased as their crystallinity de- creased. The compressive fracture surfaces showed that Mg72 Znls Ca13, Mgs2 Zn36 Ca2, Mg14 Znzz Cas4, and Mg2sZn4sCa2s were all of brittle fracture.
同期刊论文项目
同项目期刊论文
期刊信息
位置：