铸造工程
鑄造工程
주조공정
FOUNDRY ENGINEERING
2011年
5期
14-17
,共4页
高凯雄%寇生中%尚沙沙%刘广桥
高凱雄%寇生中%尚沙沙%劉廣橋
고개웅%구생중%상사사%류엄교
非晶复合材料%力学性能%组织%脆断
非晶複閤材料%力學性能%組織%脆斷
비정복합재료%역학성능%조직%취단
amorphous composites%mechanical properties%microstructure%brittle fracture
通过铜模铸造法制备出直径为3mm的(Ti66Ni20Cul3A11)100-xSix(x=0,1,3,5)合金圆柱棒。利用X射线衍射仪(XRD)和扫描电子显微镜(SEM)等研究了Si元素的添加对(Ti66Ni20Cul3Al1)100-xSi,(x=0,1,3,5)(原子百分比)合金组织与力学性能的影响。结果表明:当x=0时,形成Ti基非晶复合材料,塑性应变量达4.5%,同时应力达到1774MPa;当x=1时,试样塑性变形量为3.3%,断裂强度达1825MPa。Si的添加使合金析出脆性相,导致试样破坏性脆断。
通過銅模鑄造法製備齣直徑為3mm的(Ti66Ni20Cul3A11)100-xSix(x=0,1,3,5)閤金圓柱棒。利用X射線衍射儀(XRD)和掃描電子顯微鏡(SEM)等研究瞭Si元素的添加對(Ti66Ni20Cul3Al1)100-xSi,(x=0,1,3,5)(原子百分比)閤金組織與力學性能的影響。結果錶明:噹x=0時,形成Ti基非晶複閤材料,塑性應變量達4.5%,同時應力達到1774MPa;噹x=1時,試樣塑性變形量為3.3%,斷裂彊度達1825MPa。Si的添加使閤金析齣脆性相,導緻試樣破壞性脆斷。
통과동모주조법제비출직경위3mm적(Ti66Ni20Cul3A11)100-xSix(x=0,1,3,5)합금원주봉。이용X사선연사의(XRD)화소묘전자현미경(SEM)등연구료Si원소적첨가대(Ti66Ni20Cul3Al1)100-xSi,(x=0,1,3,5)(원자백분비)합금조직여역학성능적영향。결과표명:당x=0시,형성Ti기비정복합재료,소성응변량체4.5%,동시응력체도1774MPa;당x=1시,시양소성변형량위3.3%,단렬강도체1825MPa。Si적첨가사합금석출취성상,도치시양파배성취단。
The alloy rods with 3 mm in diameter of (Ti66Ni20Cu13A11)100-xSix (x=0, 1, 3, 5) were prepared by copper die casting method. The effects of Si addition on the microstructure and the mechanical properties of (Ti66Ni20Cuz3Al1)100-xSix (x=0, 1, 3, 5) (at%) alloys were investigated mainly by means of X-ray diffraction (XRD) and scanning electric microscopy (SEM). It was shown that Ti-based amorphous composites are formed (x=0), the stress and plastic strain of'the composite are as high as 1774MPa and 4.5%; When x=l, sample with plastic and fracture strength are 3.3% and 1825MPa, respectively. The alloys precipitate brittle phase because of the Si addition, which causes the samples destructive fault by brittle fracture.