Title

Causes Of Cracking In High-Strength Weld Metals

Date

1952

Index Abstract

Coming Soon

Photo Quality

Complete

Report Number

WADC TR 52-322 Part 4

Creator

Lowe, A. L., Jr.

Rieppel, P. J.

Sopher, R. P.

Corporate Author

Battelle Memorial Institute

Laboratory

Materials Laboratory

Extent

41

PB Number

PB124150

Identifier

AD0093335

Access Rights

None

Distribution Classification

1

Contract

AF 33(616)-2734

DoD Task

73516

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

PER ASD LTR

Abstract

This report summarizes the experimental work in a study to determine the causes of cracking in high-strength weld metals. A new hot-tension machine was designed and built to facilitate the testing of SAE 4340 weld metals on cooling from the molten state. The tests were conducted over the temperature range from 2600 F to 100 F. Results from the studies showed phosphorus to be detrimental to weld-metal cracking resistance. As the phosphorus was increased the ductility was lowered at temperatures near the solidus. Nitrogen content within the normal range of SAE 4340 steels appeared to have little influence on the cracking resistance of the weld deposits. Rare-earth metal additions improved the hot ductility and hot-cracking resistance of the weld metals. An increase in silicon lowered the hot ductility and hot-cracking resistance slightly.

Report Availability

Full text available

DoD Project

7351 - Metallic Materials

Date Issued

1955-11

Provenance

IIT

Type

report

Format

1 online resource