Mechanical alloying process
AssigneeAluminum Company of America
InventorJohn S. Benjamin
Life of this patent
Estimating the term…
Abstract
A mechanical alloying process wherein compacting of particulate feedstock is physically separate from subsequent comminuting improves control and consistency in mechanical alloying. The preferred compaction is by squeezing between rollers or other compacting means to produce a coherent mass such as a strip. The coherent mass (preferably rolled strip) is comminuted separately from the rolling or compression. This allows for a reduced temperature in comminuting or an atmosphere different from compacting or compressing. Compacting and comminuting are repeated to produce the desired extent of alloying and homogenization.
Claims49
A mechanical alloying method comprising the steps of:
- (a) feeding mechanically alloyable feedstock material comprising particulate material containing different alloy ingredients through a roll bite of opposing rollers for producing a rolled compact comprising welded particulate,
- (b) comminuting said rolled compact to form a comminuted particulate product, and
- (c) repeating (a) and (b) a plurality of times until the homogeneity of the material is increased and mechanical alloying is achieved.
A mechanical alloying process for mechanically alloying feed particulate, said process or mechanical alloying including repeated welding of particulate material and repeated comminuting of welded particulate as parts of said mechanical alloying process for substantially all of said feed, to produce a mechanically alloyed particulate of increased homogeneity over the feed particulate wherein a separating of said welding and said comminuting essentially into separate steps such that each is carried out physically apart from the other.
A process of mechanical alloying feedstock material including repeated welding of particulate and repeated comminuting of welded particulate to make particulate in which said repeated welding and said repeated comminuting steps are applied to substantially all said feedstock material and are carried out in separate environments, said separate environments being separated physically apart from one another.
A process of mechanical alloying of feedstock material including repeated welding of particulate and repeated comminuting of welded particulate to make mechanically alloyed particulate, said repeated welding and comminuting being parts of said mechanical alloying process and being applied to substantially all said feedstock material in which said repeated welding is carried out physically apart from said repeated comminuting and at least some of said welding is at higher temperature than some comminuting.
A mechanical alloying method for making mechanically alloyed particulate comprising the steps of:
- (a) feeding particulate feedstock material containing different alloying ingredients through a roll bite of opposing rollers for producing a rolled compact of welded particulate,
- (b) comminuting substantially off of said rolled compact to form a comminuted particulate product,
- (c) feeding substantially all of said comminuted particulate product through a roll bite of opposing rollers to form a welded compact from the comminuted particulate product, and
- (d) comminuting substantially all of the rolled product from (c) to form particulate.
A process for mechanically alloying mechanically alloyable particulate feedstock material comprising different alloying ingredients to increase homogeneity of the distribution of alloying ingredients in the material comprising:
- (a) compacting said particulate feedstock material to make compacted material comprising welded particulate;
- (b) physically separately from said compacting, comminuting the compacted material to make a comminuted particulate material;
- (c) said feedstock material being provided to achieve a preselected mechanical alloy composition;
- (d) repeating (a) and (b) a plurality of times on said material until the homogeneity of the distribution of the alloying ingredients in the material is increased over that of the feedstock material and mechanical alloying is achieved;
- and
- (e) recovering mechanically alloyed particulate product.
A process for mechanically alloying feedstock material to produce a product having increased homogeneity of the distribution of alloying ingredients over the homogeneity of alloying ingredients in the feedstock material comprising:
- (a) providing feedstock material comprising particulate material and different alloying ingredients including one or more metals;
- (b) compacting said feedstock material by moving it through opposed rollers within a temperature range T.sub.comp to make compacted material comprising welded particulate;
- (c) comminuting the compacted material at one or more temperatures T.sub.comm below the temperature or temperatures T.sub.comp in compacting to make a comminuted particulate;
- (d) repeating (b) and (c) on substantially all said feedstock material until the homogeneity of the material is increased and a mechanical alloying effect is imparted to the material;
- and
- (e) recovering mechanically alloyed particulate product.
A process for mechanically alloying feedstock material to produce a product having increased homogeneity of the distribution of alloying ingredients over the homogeneity of alloying ingredients in the feedstock material comprising:
- (a) providing feedstock material comprising particulate material and different alloying ingredients;
- (b) compacting said feedstock material by moving it through opposed rollers to make compacted material comprising welded particulate;
- (c) cooling the compacted material;
- (d) comminuting the compacted material to make a comminuted particulate;
- (e) repeating (b) and (d) on substantially all of said feedstock material until the homogeneity of the material is increased and a mechanical alloying effect is imparted to the material;
- and
- (f) recovering mechanically alloyed particulate product.
A process for mechanically alloying feedstock material comprising particulates containing different alloying ingredients including one or more metals to increase homogeneity of the distribution of alloying ingredients and impart a mechanical alloying effect to the material comprising:
- (a) compacting said feedstock material to make compacted material comprising welded particulate;
- (b) comminuting substantially all the compacted material to make a comminuted particulate material;
- (c) compacting material comprising substantially all of said comminuted particulate material to make compacted material comprising welded particulate;
- and
- (d) comminuting substantially all the compacted material from (c).
A process for mechanically alloying feedstock material comprising particulates containing different alloying ingredients including one or more metals to increase homogeneity of the distribution of alloying ingredients to impart mechanical alloying comprising:
- (a) compacting said feedstock material to make compacted material comprising welded particulate;
- (b) separate from said compacting, comminuting the compacted material to make a comminuted particulate material;
- (c) compacting material comprising substantially all of said comminuted particulate material to make a second compacted material comprising welded particulate;
- (d) separate from said compacting to make a second compacted material, comminuting substantially all of the second compacted material;
- (e) compacting material comprising substantially all of the comminuted material from (d);
- and
- (f) comminuting substantially all the compacted material from (e).
A process for mechanically alloying feedstock material to produce a particulate product having increased homogeneity of the distribution of alloying ingredients over the homogeneity of alloying ingredients in the feedstock material comprising:
- (a) providing particulate feedstock material comprising different alloying ingredients including one or more metals;
- (b) compacting said feedstock material by moving it through opposed rollers to make compacted material comprising welded particulate;
- (c) comminuting substantially all the compacted material to make a comminuted particulate material;
- (d) compacting material comprising substantially all of said comminuted particulate material from (c) and additional material different from said comminuted particulate material to make a second compacted material comprising welded particulate;
- (e) comminuting substantially all of the second compacted material;
- (f) compacting substantially all the material from (e);
- and
- (g) comminuting substantially all the material from (f), thereby to increase the homogeneity of alloying ingredients over that in the feedstock material and impart a mechanical alloying effect to the particulate.
A process for mechanically alloying feedstock material to produce a product having increased homogeneity of the distribution of alloying ingredients over the homogeneity of alloying ingredients in the feedstock material and impart a mechanical alloying effect to the material comprising:
- (a) providing particulate feedstock material comprising different alloying ingredients including one or more metals;
- (b) compacting said feedstock material by moving it through opposed rollers to make compacted material comprising welded particulate;
- (c) comminuting substantially all the compacted material to make a comminuted particulate material;
- (d) compacting material comprising substantially all of said comminuted particulate material to make a second compacted material comprising welded particulate;
- (e) comminuting substantially the second compacted material at less than the temperature or temperatures at which the compacting of (d) was carried out;
- and
- (f) recovering mechanical alloyed particulate.
A process for mechanically alloying feedstock material to produce a product having increased homogeneity of the distribution of alloying ingredients over the homogeneity of alloying ingredients in the feedstock material comprising:
- (a) providing particulate feedstock material comprising different alloying ingredients including one or more metallic ingredients;
- (b) compacting said feedstock material by moving it through opposed rollers to make compacted material comprising welded particulate;
- (c) comminuting substantially all the compacted material to make a comminuted particulate material;
- (d) compacting material comprising substantially all of said comminuted particulate material and additional material different from said comminuted particulate material to make a second compacted material comprising welded particulates;
- (e) comminuting substantially all of the second compacted material;
- (f) compacting substantially all of the material from (e);
- (g) comminuting substantially all of the material from (f), thereby to increase the homogeneity of alloying ingredients over that in the feedstock material and impart a mechanical alloying effect to the particulate;
- and
- (h) at least one said comminuting being carried out at less than the temperature or temperatures of the compacting immediately preceding it.
A process for mechanically alloying feedstock material to increase homogeneity of the distribution of alloying ingredients over the homogeneity of alloying ingredients in the feedstock material and impart a mechanical alloying effect to the material comprising:
- (a) providing feedstock material comprising different alloying ingredients including one or more metals;
- (b) compacting said feedstock material by moving it through opposed rollers to make compacted material;
- (c) comminuting the compacted material to make a comminuted particulate material;
- (d) compacting material comprising said comminuted particulate material to make a second compacted material;
- (e) comminuting the second compacted material;
- and
- (f) repeating steps (d) and (e) on substantially all said feedstock material from one to 50 times.
Dependencies are inferred from the claim text.