初步探索了利用真空自耗电弧重熔(VAR)方法制备钒合金的工艺流程.测试了铸锭的化学成分和维氏硬度,并利用OM,XRD和SEM分析了铸态组织.结果表明:自耗电极氧化和吸气严重.铸锭内部存在孔洞.铸锭C,N,O杂质含量较高,分别达到390μg·g-1,0.23%和0.61%.合金元素Cr在中部偏析,Ti分布相对均匀,但二者都有一定的烧损.铸锭实测成分为V-3.8Cr-3.6Ti,维氏硬度达282.2.铸锭晶粒呈等轴形态,晶粒尺寸不均匀,从30～500μm不等.铸锭为典型的多相组织,钒基固溶体中分布有大量的第二相.
参考文献
| [1] | 谌继明.合金元素和氢、氧对钒合金拉伸性能的影响[J].材料科学与工艺,2002(04):366-370. |
| [2] | 谌继明.中子辐照对钒合金强塑性的影响及其温度效应[J].核聚变与等离子体物理,2002(04):209-214. |
| [3] | SmithDL;ChungHM;MatsuiH et al.Progress in vanadium alloy development for fusion applications[J].Fusion Engineering and Design,1998,41:7. |
| [4] | Thresh H R .Preparation and fabrication of vanadium base al-loys[DOE/ER-0313/1][R]. |
| [5] | Potapenko M M;Drobishev V A;Filkin V Y et al.Manufac-ture of semifinished items of alloys V-4Ti-4Cr and V-10Ti-SCr for use as a structural material in fusion applications[J].Journal of Nuclear Materials,1996,233-237:438. |
| [6] | Muroga T.;Iiyoshi A.;Kawabata A.;Sakurai S.;Sakata M.;Nagasaka T. .NIFS program for large ingot production of a V-Cr-Ti alloy[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2000(Pt.A):711-715. |
| [7] | Shikov A K;Chernov V M;Potapenko M M et al.Develop-ment of production process and study of low-activity V-(4～5)%Ti-(4～5)% Cr structural alloys for thermonuclear reactors[J].Metal Science and Heat Treatment,2004,46(11-12):497. |
| [8] | Johnson W R;Smith J P .Fabrication of a 1200 kg ingot of V-4Cr-4Ti alloy for the DⅢ-D radiative divertor progam[J].Journal of Nuclear Materials,1998,258-263:1425. |
| [9] | Birzhevoy G A ."Physical,Thormophysical and Mechanical properties of V-4Cr-4Ti and V-8Cr-5Ti Alloys before and after Va-nadium Ion Irradiation" FRM7[Z]. |
| [10] | Simpson W A .Room Temperature Elastic Properties of V-SCr-5Ti[DOE/ER-0313/16][R]. |
| [11] | Tyumentsev AN;Korotaev AD;Pinzhin YP;Ditenberg IA;Litovchenko SV;Shuba YV;Shevchenko NV;Drobishev VA;Potapenko MM;Chernov VM .Effect of the modes of thermomechanical treatment on the formation of the multiphase and grain structure of V-4Ti-4Cr alloys[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(0):429-433. |
| [12] | 陈勇,谌继明,邱绍宇.钒合金的沉淀析出行为和时效强化[J].稀有金属,2006(03):295-299. |
| [13] | Heo NJ.;Nagasaka T.;Muroga T. .Recrystallization and precipitation behavior of low-activation V-Cr-Ti alloys after cold rolling[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(1):53-60. |
| [14] | Chen J M.The mechanical properties of V-4Cr-4Ti in va-rious thermo-mechanical states[J].Fusion Engineering and Design,2006 |
| [15] | Heo NJ.;Nagasaka T.;Muroga T.;Matsui H. .Effect of impurity levels on precipitation behavior in the low-activation V-4Cr-4Ti alloys[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2002(Pt.a):620-624. |
| [16] | 郑昌琼.简明材料词典[M].北京:科学出版社,2002 |
| [17] | Sakai K;Satou M;Fujiwara M;Takanashi K;Hasegawa A;Abe K .Mechanical properties and microstructures of high-chromium V-Cr-Ti type alloys[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(0):457-461. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%