Shear-assisted extrusion assemblies are provided. The assemblies can include a billet containing assembly containing a billet comprising a billet outer material and a billet inner material in at least one cross-section; a tool operably engaged with the billet; an extrudate receiving channel configured to receive extrudate from the tool, wherein the extrudate comprises extruded outer material and extruded inner material in at least one cross-section, the extruded outer material being the same material as the billet outer material, and the extruded inner material being the same as the billet inner material. Methods for producing multi-material shear-assisted extrudate are also provided.

Shear-assisted extrusion assemblies are provided. The assemblies can include a billet containing assembly containing a billet comprising a billet outer material and a billet inner material in at least one cross-section; a tool operably engaged with the billet; an extrudate receiving channel configured to receive extrudate from the tool, wherein the extrudate comprises extruded outer material and extruded inner material in at least one cross-section, the extruded outer material being the same material as the billet outer material, and the extruded inner material being the same as the billet inner material. Methods for producing multi-material shear-assisted extrudate are also provided.

A shear assisted extrusion process for producing cladded materials wherein a cladding material and a material to be cladded are placed in sequence with the cladded material positioned to contact a rotating scroll face first and the material to be cladded second. The two materials are fed through a shear assisted extrusion device at a preselected feed rate and impacted by a rotating scroll face to generate a cladded extrusion product. This process allows for increased through wall strength and decreases the brittleness in formed structures as compared to the prior art.

A shear assisted extrusion process for producing cladded materials wherein a cladding material and a material to be cladded are placed in sequence with the cladded material positioned to contact a rotating scroll face first and the material to be cladded second. The two materials are fed through a shear assisted extrusion device at a preselected feed rate and impacted by a rotating scroll face to generate a cladded extrusion product. This process allows for increased through wall strength and decreases the brittleness in formed structures as compared to the prior art.

The present invention relates to an AlMgSi aluminium alloy comprising in wt %: Mg: 0.45-1.2Si: 0.40-1.0Ti: 0.05-0.20V: 0.05-0.15Cu: <0.30Mn: <0.30Cr<0.15Zr<0.15Fe<0.50Zn<0.50 the rest being aluminium and inevitable impurities, N wherein the content of Ti+V is 0.10-0.30, the Si.sub.eff/Mg ratio being <1.0, having improved ductility and crush properties with good energy absorption, corrosion resistance and temperature stability, and which is particularly useful for structural components in crash exposed areas in vehicles.

The present invention relates to an AlMgSi aluminium alloy comprising in wt %: Mg: 0.45-1.2Si: 0.40-1.0Ti: 0.05-0.20V: 0.05-0.15Cu: <0.30Mn: <0.30Cr<0.15Zr<0.15Fe<0.50Zn<0.50 the rest being aluminium and inevitable impurities, N wherein the content of Ti+V is 0.10-0.30, the Si.sub.eff/Mg ratio being <1.0, having improved ductility and crush properties with good energy absorption, corrosion resistance and temperature stability, and which is particularly useful for structural components in crash exposed areas in vehicles.

A shear-assisted extrusion process and related apparatus can include establishing a rotational shearing force and an axial extrusion force at an interface where a face of a die tool engages with a face of a portion of billet or other feedstock material, and extruding the portion of feedstock material through an opening of the die tool in response to establishing the rotational shearing force and the axial extrusion force. The die tool can be rotated at a different rate than the feedstock material prior to extrusion of the feedstock material through the opening of the die tool. A number of configurations can be used to provide the rotational shearing force and/or the axial extrusion force, as described herein.

A shear-assisted extrusion process and related apparatus can include establishing a rotational shearing force and an axial extrusion force at an interface where a face of a die tool engages with a face of a portion of billet or other feedstock material, and extruding the portion of feedstock material through an opening of the die tool in response to establishing the rotational shearing force and the axial extrusion force. The die tool can be rotated at a different rate than the feedstock material prior to extrusion of the feedstock material through the opening of the die tool. A number of configurations can be used to provide the rotational shearing force and/or the axial extrusion force, as described herein.

The present invention relates to a special-shaped part machining mold and design and assembly methods thereof. The design method includes: constructing a multi-layer combined mold according to parameters required by special-shaped part machining; analyzing an equivalent stress distribution after the mold is assembled, selecting a part of equivalent stress evaluation points, and performing equivalent strength simulation to obtain a pressing sleeve ratio change curve circumferentially distributed at a matching surface of the mold; obtaining curve changes at different positions in a circumferential direction of the mold according to the pressing sleeve ratio change curve circumferentially distributed at the matching surface of the mold, so that a new mold is designed; determining whether the new mold has a condition of uneven stress distribution or not; if yes, repeatedly analyzing equivalent stress distribution after the mold is assembled; and if not, completing the design of the mold.

The present invention relates to a special-shaped part machining mold and design and assembly methods thereof. The design method includes: constructing a multi-layer combined mold according to parameters required by special-shaped part machining; analyzing an equivalent stress distribution after the mold is assembled, selecting a part of equivalent stress evaluation points, and performing equivalent strength simulation to obtain a pressing sleeve ratio change curve circumferentially distributed at a matching surface of the mold; obtaining curve changes at different positions in a circumferential direction of the mold according to the pressing sleeve ratio change curve circumferentially distributed at the matching surface of the mold, so that a new mold is designed; determining whether the new mold has a condition of uneven stress distribution or not; if yes, repeatedly analyzing equivalent stress distribution after the mold is assembled; and if not, completing the design of the mold.