High strength welding of NiTi and stainless steel by impact: Process, structure and properties

Stainless steels have widespread applications due to their good corrosion resistance, but for certain types of large naval constructions, other requirements are imposed such as high strength and toughness , and modified magnetic characteristics.The magnetic characteristics of a 302 type metastable austenitic stainless steel has been assessed after various cold rolling treatments designed to increase strength by strain inducement of martensite. A grade 817M40 low alloy medium carbon steel was used as a reference material.The metastable austenitic stainless steel after solution treatment possesses a fully austenitic microstructure. However its tensile strength , in the solution treated condition , is low.Cold rolling results in the strain induced transformation to α’- martensite in austenitic matrix and enhances the tensile strength. However , α’-martensite is ferromagnetic , and its introduction to an otherwise fully paramagnetic matrix alters the magnetic response of the material. An example of the mixed martensitic-retained austenitic microstructure obtained after the cold rolling experiment is provided in the SEM micrograph of Figure 1.

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METGLAS MBF-30/30A

Alloy Digest ◽

10.31399/asm.ad.ni0273 ◽

1981 ◽

Vol 30 (12) ◽

Keyword(s):

Stainless Steel ◽

Metallic Glass ◽

Physical Properties ◽

Flow Characteristics ◽

High Strength ◽

Thin Foil ◽

Heat Treating

Abstract METGLAS MBF-30A is a brazing foil in ductile, flexible metallic-glass form (a similar grade, MBF-30, is identical except that it has larger dimensional tolerances). This foil provides an alloy with high strength at both elevated and room temperatures. It can be used to join highly stressed stainless steel and heat-resisting alloy components. The excellent flow characteristics of this alloy recommend it for assemblies with good fit-up and tight-tolerance joints. It works well on thin-foil, honeycomb designs and on fairly heavy components. This datasheet provides information on composition, physical properties, and microstructure. It also includes information on heat treating. Filing Code: Ni-273. Producer or source: Allied Corporation.

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AISI No. 633

Alloy Digest ◽

10.31399/asm.ad.ss0389 ◽

1981 ◽

Vol 30 (7) ◽

Keyword(s):

Heat Treatment ◽

Stainless Steel ◽

Stainless Steels ◽

High Strength ◽

Heat Treating ◽

Corrosion Resistant ◽

Martensitic Stainless Steels ◽

Steel Mills ◽

Temperature Performance ◽

Structural Applications

Abstract AISI No. 633 is a chromium-nickel-molybdenum stainless steel whose properties can be changed by heat treatment. It bridges the gap between the austenitic and martensitic stainless steels; that is, it has some of the properties of each. Its uses include high-strength structural applications, corrosion-resistant springs and knife blades. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-389. Producer or source: Stainless steel mills.

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ARMCO 21-6-9

Alloy Digest ◽

10.31399/asm.ad.ss0125 ◽

1961 ◽

Vol 10 (12) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

High Strength ◽

Heat Treating ◽

Steel Alloy ◽

Temperature Performance

Abstract Armco 21-6-9 is an austenitic stainless steel alloy designed for use in applications where a combination of high strength and corrosion resistance is desired. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-125. Producer or source: Armco Inc., Eastern Steel Division.

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JETHETE M.151

Alloy Digest ◽

10.31399/asm.ad.ss0116 ◽

1961 ◽

Vol 10 (4) ◽

Keyword(s):

Stainless Steel ◽

Physical Properties ◽

Tensile Properties ◽

High Strength ◽

Heat Treating

Abstract Jethete M.151 is a high strength, transformable stainless steel, suitable for welding. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on forming, heat treating, and joining. Filing Code: SS-116. Producer or source: Luria Steel & Trading Corporation (Agent).

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ALLVAC 13-8

Alloy Digest ◽

10.31399/asm.ad.ss0866 ◽

2002 ◽

Vol 51 (11) ◽

Keyword(s):

Stainless Steel ◽

Precipitation Hardening ◽

Cold Working ◽

High Strength ◽

Heat Treating ◽

General Corrosion ◽

Single Treatment ◽

Good Resistance ◽

Temperature Performance ◽

Very High

Abstract Allvac 13-8 has good fabricability and can be age hardened by a single treatment in the range 510-620 deg C (950-1150 deg F). Cold working prior to aging enhances the aging. This martensitic precipitation-hardening stainless steel has very good resistance to general corrosion and stress-corrosion cracking. It develops very high strength and exhibits good transverse ductility and toughness in heavy sections. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-866. Producer or source: Allvac Metals Company.

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AL 15-7 PRECIPITATION HARDENING ALLOY

Alloy Digest ◽

10.31399/asm.ad.ss0496 ◽

1988 ◽

Vol 37 (6) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

Precipitation Hardening ◽

High Strength ◽

Heat Treating ◽

Vacuum Arc ◽

Temperature Performance

Abstract Allegheny Ludlum AL 15-7 Alloy is a chromium-nickel-molybdenum-aluminum semi-austenitic stainless steel. It is heat treatable to high strength and it has a moderate level of corrosion resistance. It is available both as a conventionally melted product and as vacuum arc or electroslag refined material. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-496. Producer or source: Allegheny Ludlum Corporation.

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UNILOY 326

Alloy Digest ◽

10.31399/asm.ad.ss0241 ◽

1970 ◽

Vol 19 (7) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Physical Properties ◽

Stress Corrosion ◽

Tensile Properties ◽

High Strength ◽

Heat Treating ◽

Distinct Advantage ◽

Two Phase ◽

Stress Corrosion Resistance

Abstract UNILOY 326 is a two-phase, ferromagnetic stainless steel characterized by high strength and very good general and stress corrosion resistance. It has distinct advantage for the fastener industry. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-241. Producer or source: Cyclops.

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