材料导报
材料導報
재료도보
MATERIALS REVIEW
2007年
z2期
196-198
,共3页
曹鹏军%仵海东%范培耕%周安若
曹鵬軍%仵海東%範培耕%週安若
조붕군%오해동%범배경%주안약
Cu基大块非晶合金%过冷液相温度区间%玻璃形成能力%机械性能%添加元素
Cu基大塊非晶閤金%過冷液相溫度區間%玻璃形成能力%機械性能%添加元素
Cu기대괴비정합금%과랭액상온도구간%파리형성능력%궤계성능%첨가원소
copper-based bulk glassy alloys%supercooled liquid region%glass-forming ability%mechanical properties%additional element
利用铜模铸造方法制备了具有大过冷液相温度区间的Cu-Zr-Ti-Ni系高强度Cu基大块非晶合金,对于Cu55Zr55Ti15Ni5合金,最大直径达5mm.过冷液相区温度范围ΔTx达45.48～70.98 K.Cu基玻璃合金棒表现出非常高的机械性能和明显的塑性,对于Cu50Zr25Ti15Ni10、Cu55Zr25Ti15Ni5和Cu54Zr22Ti18Ni6合金,压缩断裂强度分别达2155MPa、2026MPa和1904MPa,维氏硬度分别达674、678和685.加入Co元素扩大了CuZr-Ti-Ni系合金的ΔTx,Cu50Zr22Ti18Ni6Co4合金的ΔTx高达74.5K.
利用銅模鑄造方法製備瞭具有大過冷液相溫度區間的Cu-Zr-Ti-Ni繫高彊度Cu基大塊非晶閤金,對于Cu55Zr55Ti15Ni5閤金,最大直徑達5mm.過冷液相區溫度範圍ΔTx達45.48～70.98 K.Cu基玻璃閤金棒錶現齣非常高的機械性能和明顯的塑性,對于Cu50Zr25Ti15Ni10、Cu55Zr25Ti15Ni5和Cu54Zr22Ti18Ni6閤金,壓縮斷裂彊度分彆達2155MPa、2026MPa和1904MPa,維氏硬度分彆達674、678和685.加入Co元素擴大瞭CuZr-Ti-Ni繫閤金的ΔTx,Cu50Zr22Ti18Ni6Co4閤金的ΔTx高達74.5K.
이용동모주조방법제비료구유대과랭액상온도구간적Cu-Zr-Ti-Ni계고강도Cu기대괴비정합금,대우Cu55Zr55Ti15Ni5합금,최대직경체5mm.과랭액상구온도범위ΔTx체45.48～70.98 K.Cu기파리합금봉표현출비상고적궤계성능화명현적소성,대우Cu50Zr25Ti15Ni10、Cu55Zr25Ti15Ni5화Cu54Zr22Ti18Ni6합금,압축단렬강도분별체2155MPa、2026MPa화1904MPa,유씨경도분별체674、678화685.가입Co원소확대료CuZr-Ti-Ni계합금적ΔTx,Cu50Zr22Ti18Ni6Co4합금적ΔTx고체74.5K.
High-strength Cu-based bulk glassy alloys with a large supercooled liquid region in Cu-Zr-Ti-Nisystems are prepared by means of copper mold casting. The maximum diameter is 5.0 mm for the Cu55Zr25Ti15Ni5 alloy. The temperature interval of supercooled liquid region (ΔTx) is as large as 45.48～70.98 K. The Cu-based glassy alloys rods exhibited the very high mechanical properties and the distinct plastic strains, the compressive fracture strength is 2155 MPa for Cu50Zr25Ti15Ni10, 2026 MPa for Cu55Zr25Ti15Ni5 and 1904 MPa for Cu54Zr22Ti18Ni6. The vickers hardness is 678 for Cu55Zr25Ti15Ni5 glassy alloy, 685 for Cu54Zr22Ti18Ni6 glassy alloy and 674 for Cu50Zr25Ti15Ni10 glassy alloy. The addition Co element to Cu-Zr-Ti-Ni alloy expand the ΔTx, when Co content is 4 at%, the ΔTx is 74.5 K for Cu50Zr22Ti18Ni6Co4 alloy.
