Al-15Si-6Ni Abstract: Htunghking hku nna, n-gun ja ai Al-Si alloy centrifugal casting hta, madung Si particles, pores hte slag ni gaw, kata na layer hta aten langai hta sha hpawng de wa na rai nna, n-gun ja wa ai layer hta Si paricles ni a n-gun ja wa ai akyu hpe shayawm kau na re. Ndai n kaja ai lam hpe koi lu na matu, Al-15%Si-6%Ni hpe n-gun n rawng ai hku jai lang nna, kata na n-gun hta n-gun rawng ai, pores hte slag ni a gradient mixture hpe awng dang hkra lajang da u. N bung ai ladat masa ni a npu hta sample law law hpe sawk sagawn ai shaloi, centrifugal force field hta, n-gun n law ai primary Crystal Si particles ni hpe shinggan layer de shinggrup nna, shinggan layer hta volume daw law ai gradient composite material hpe hpaw shabawn na hpe madun dan ai. Electromagnetic field hpe jai lang ai gaw, shawng nnan na particle ni a n-gun hte n-gun hpe shayawm ya lu nna, mam ni hpe gram lajang ya lu ai.(1) Sample langai hte langai hta pores hte slag clips n bung ai. Casting hta lawm ai pores hte slag ni gaw madung hku nna centrifugal hkrang shapraw ai lam hta curga hte oxidation kaw na pru wa ai. Casting a ngang kang ai lam hte, dai hta lawm ai gas hka lim ai lam gaw, shi a n-gun kaji ai majaw, n-gun n-gun hte rau, n-gun n-gun hpe n-gun jaw na re, dai hku nna, kata na ginra hta n-gun n rawng ai layer byin pru wa na re, dai gaw, sumla hte e ginra ni hta madun da ai hte maren, n-gun n rawng ai layer byin pru wa na re. Hkrang 4-1 hta madun da ai hte maren, particles ni gaw magnetic field n lawm ai agglomeration hkrang hpe asan sha madun dan ai. Magnetic field a shingjawng ai lam hte magnetic field hpe jat wa ai hte maren, particles ni a agglomeration grai yawm mat ai, sumla 4-2,4-3,4-4 hta madun da ai hte maren. (3) Dai particles ni gaw shinggan layer de polarization a myit jasat hpe madun dan ai. Centrifugal n-gun npu hta, particle ni gaw shinggan layer de polarization byin wa ai lam hpe asan sha madun dan ai, centrifugal a lawan ai lam, ginra ni a, b, c hta sumla 4-5,4-3-3,4-6,4-7-7-8.(4) Dai n-gun ja ai shara kaw na garan ginhka ai lam. Casting a shinggan layer (a, b, c ginra) hpe particle kaba ni a majaw particle jat ai shara ngu shamying ma ai; casting a kata na layer (d, e area) hta pores, slag hte kaji ai particle ni law law lawm ai, dai hpe n kaja ai shara ngu shamying ma ai.
2.3 Microscopic wuhpung wuhpawng hta magnetic field a akyu gaw sumla 7-9 gaw 1000 r/min hte 0, 1.5A hte 2A hta 1000 r/min hte ya aten na n-gun atsam ni a shingra tara hku nna n-gun rawng ai wuhpung wuhpawng ni rai nga ai. Dai ni hta, nsam hpraw ai block, Si hte nhtoi hpraw ai bar ni, block block, NiAl3 hte hpraw -Al tissue ni nga ai. Primary kristal, Si hte NiAl3 yan gaw langai hte langai law law hpawng de, hkan nang hkan sa, shinggrup da ai. Shinggan na sample a shawng na Si gaw kaji ai shinggan na magnetic field (dai gaw, n-gun n rawng ai 0) n nga ai shaloi, kata na layer a shawng nnan na Si gaw shinggan layer hta grau kaba ai, lapran na galai shai ai layer particles ni a kaba ai lam gaw kata hte shinggan layer ni a lapran rai nga ai, madung Si particles ni gaw madung hku nna block langai hte langai hta block langai mi hta madung tawn ai, layer langai hte langai hta madung hku nna n dan dawng ai, madung hku nna block hte long strip ni hpe n bung ai hku n mu lu ai. Magnetic field hpe bang ngut ai hpang, sample a layer langai hpra a Si hte NiAl3 hpe℃amyu myu hku nna gram lajang ai. Magnetic field n-gun kaji ai shaloi (ya aten na 1.5A), npawt nhpang n-gun n-gun kaji ni kaji mat wa ai, sharp block kaw nna round block de galai mat wa ai. Primary NiAl3 hpe mung n bung ai madang de gram lajang da nna, block mung kaji mat nna, galu ai strip hpe block hku garan kau ai. Magnetic field n-gun kaba ai (ya aten 2A), layer langai hte langai a primary Si hte NiAl3 hpe n gram lajang sai, madung Si hte NiAl3 particles ni pyi grau kaba wa nna, shawng na Si hte NiAl3 particle ni grau kaba wa nna, shawng nnan na NiAl3 strip ni gaw grau kaba wa ai.
