Novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy and preparation method thereof

The invention discloses a novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy. The novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy comprises the following components in percentage by weight: 8.3-9.7% of Al, 0.35-1.0%...

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Bibliographische Detailangaben
Hauptverfasser: HUANG CHUNDE, GAO YIBIN, AN QINGANG, DONG YONGJUN, DU JIE, PEI LIXIA
Format: Patent
Sprache:eng
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Zusammenfassung:The invention discloses a novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy. The novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy comprises the following components in percentage by weight: 8.3-9.7% of Al, 0.35-1.0% of Zn, 0.15-0.50% of Mn, 0.5-1.0% of Si, 0.01-0.03% of P, 0.01-0.04% of Ti and the balance being Mg. According to the novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy, the Si is added, so that an Mg2Si reinforcement phase is formed; a novel multi-element metamorphism agent Al-Ti-C-P intermediate alloy is added; the Mg2Si reinforcement phase is changed from the shape of bulky characters into the shape of fine particles; meanwhile, the size of alloy grains is fined, so that the mechanical property of the alloy is significantly improved; the novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy is a multi-element metamorphism agent with integrated fine alloy structure and the metamorphism reinforcement phase; in addition, the multi-element metamorphism agent is added into a magnesium melt in the form of the Al-Ti-C-P intermediate alloy during melting; the melting temperature is 730-780 DEG C; the novel multi-element metamorphism Si-containing high-strength heat-resistant magnesium alloy is low in cost, easy to add and absorb, small in dosage and significant in metamorphism effect.