Al–Ba–Bi, Al–Ba–Cu, Al–Ba–Mg, Al–Ba–Pb, Al–Ba–Si, Al–Bi–Ca, Al–Bi–Sr, Al–Ca–Pb, Al–Ca–Sb, Al–Ca–Sn, Al–Pb–Sr Aluminum–Barium–Bismuth, Aluminum–Barium–Copper, Aluminum–Barium–Magnesium, Aluminum–Barium–Lead, Aluminum–Barium–Silicon, Aluminum–Bismuth–Calcium, Aluminum–Bismuth–Strontium, Aluminum–Calcium–Lead, Aluminum–Calcium–Antimony, Aluminum–Calcium–Tin, Aluminum–Lead–Strontium

440 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53.

A. Ohno, etc., Met A 3,120421 I. G. Davies, etc., Met A 3,120485 W. H. Ellis, Met A 3,460067 F. J. Kiss, etc., Met A 4, 120959 Y. Nakao, etc., Met A 3, 121424 C. S. Seigland, Met A 4,121454 G. W. Delamore, etc., Met A 4, 121492; 5, 120819 G. S. Cole, etc., Met A 6, 121357 L. F. Mondolfo, Met A 5, 121382 V. I. Kulakov, etc., Met A 1,460105 D. Moritz, Met A 3, 510433 R. Morando, etc., Met A 5, 510164 R. Stary, etc., Met A 5, 510187 M. Chikuda, etc., Met A 6, 120500 Z. S. Ustdizhk, etc., Met A 6, 510473 T. Ohashi, etc., Met A 7,120158 J. Kaneko, Met A 7, 120079 A. Kleppe, Met A 6,460091 V. I. Napalkov, etc., CA 79,44935u J. Cissé, etc., WAA 7, 530105 R. Ferraz de Carvalho, etc., Met A 6,460029 V. N. Senin, etc., Met A 2,430209

Al-Ba-Bi, Al-Ba-Cu, Al-Ba-Mg, Al-Ba-Pb, Al-Ba-Si, Al-Bi-Ca, Al-Bi-Sr, Al-Ca-Pb, Al-Ca-Sb, Al-Ca-Sn, Al-Pb-Sr Aluminum-Barium-Bismuth, Aluminum-Barium-Copper, Aluminum-Barium-Magnesium, Aluminum-Barium-Lead, Aluminum-Barium-Silicon, Aluminum—Bismuth—Calcium, Aluminum-Bismuth-Strontium, Aluminum-Calcium-Lead, Aluminum-Calcium-Antimony, Aluminum-Calcium-Tin, Aluminum-Lead-Strontium The solubility of aluminum in liquid bismuth is reduced by the addition of barium, calcium, strontium; the solubility in liquid lead by barium; but both strontium and

441

calcium increase the solubility of aluminum in lead [1|. Liquid aluminum is in equilibrium with Ca3Bi2, Ca 2 Pb, Ca2Sn or Ca 3 Sb 2 [2, 3]. Barium additions to aluminum-copper or aluminum-magnesium alloys decrease sharply the liquid-gas surface tension [4]; additions to aluminum-magnesium alloys do not affect appreciably the susceptibility to exfoliation [5]. The aluminum—barium-silicon diagram is probably very similar to the aluminum-calcium-silicon one, with the solid solubility of silicon reduced by barium additions. Additions of 2.5% Ba to aluminum-silicon alloys with 0.5-1.5% Si have no effect on the hardness, both in the as-quenched temper and after aging 48 hr at 430 °K [6]. Additions of 1-2% Si to a 50% Ba alloy increase its corrosion resistance [7], REFERENCES 1. 2. 3. 4. 5. 6. 7.

C. F. Obenchain, etc., MA 1, 578 C. Hardy, Metal Progress, 1941, 40, 70 A. I. Yukova, etc., MA 2, 1284 L. Kubichek, JIMMA 27, 629 F. C. Althof, etc., JIMMA 28, 55 W. Kroll,//M 36,432 Y. V. Plotnikov, etc., Met A 6, 350414

Al-Ba-Cr, Al-Ca-Cr, Al-Ce-Cr, Al-Ce-V, Al-Cr-Er, Al-Cr-Gd, Al-Cr-Hf, Al-Cr-Ho, Al-Cr-La, Al-Cr-Lu, Al-Cr-Nd, Al-Cr-Pr, Al-Cr-Sr, Al-Gd-V, Al-La-V, Al-Nd-V, Al-Pr-V, A1-V-Y Aluminum—Barium—Chromium, Aluminum-Calcium-Chromium, Aluminum—Cerium—Chromium, Aluminum—Cerium—Vanadium, Aluminum—Chromium—Erbium, Aluminum-Chromium—Gadolinium, Aluminum—Chromium-Hafnium, Aluminum—Chromium-Holmium, Aluminum—Chromium—Lanthanum, Aluminum—Chromium—Lutetium, Aluminum—Chromium—Neodymium,